US3282745A - High strength fabrications of aluminum base alloys containing copper - Google Patents

High strength fabrications of aluminum base alloys containing copper Download PDF

Info

Publication number
US3282745A
US3282745A US283595A US28359563A US3282745A US 3282745 A US3282745 A US 3282745A US 283595 A US283595 A US 283595A US 28359563 A US28359563 A US 28359563A US 3282745 A US3282745 A US 3282745A
Authority
US
United States
Prior art keywords
copper
percent
aluminum base
alloy
high strength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US283595A
Inventor
George S Foerster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to US283595A priority Critical patent/US3282745A/en
Application granted granted Critical
Publication of US3282745A publication Critical patent/US3282745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/057—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • C22C1/0416—Aluminium-based alloys

Definitions

  • the object of the present invention is to provide a novel aluminum base alloy containing copper and capable of being processed to obtain high strength fabrications t-hereof, and the process for preparing these high strength fabrications.
  • a novel aluminum base alloy containing copper has now been developed in accordance with the invention wherein the strength has been substantially increased by incorporating therein certain other alloying metals, hereinafter referred to as additive metals, in a specific concentration range which is related to the copper content of the alloy, and processing the so -prepared novel alloy under particular conditions to obtain optimum strength.
  • this novel aluminum base alloy contains from at least 4 and preferably at least percent of copper to about percent of copper.
  • the particular amount of copper used depends on the amount and kind of additive metal employed such metal being one selected from the group consisting of calcium, chromium, iron, manganese, mischmetal, nickel, and silicon.
  • the amount of additive metal is generally between 0.3 and 10 percent of the alloy.
  • the balance of the alloy is aluminum.
  • the minimum amount of copper employed in the alloy is as aforesaid dependent upon the amount of the additive metal if any and is determined in accordance with the empirical equation:
  • Weight percent copper 4.0 +KX
  • X is the weight percent in the alloy of the selected additive metal
  • K is a constant whose value depends upon the particular additive metal used and the copper content of the alloy, the values for K being hereinafter tabulated as shown in Table I.
  • the minimium amount of copper to be employed in the alloy is obtained by modifying the above equation by substituting therein 5 for the 4.
  • the novel aluminum base alloy as specified herein is prepared by using the alloying and melting techniques commonly employed 20 in the aluminum art. Highly desirable properties are obtained by rapidly solidifying the molten alloy as, for example, by jet or disc type atomizing devices either in cool air or in a cool inert atmosphere such as, for example, argon. The molten alloy may also be cast into ordinary ingots. However, the strength values thereby obtained are generally less satisfactory than when thinwalled cold molds are used.
  • the alloy When the alloy is prepared by atomizing or pelleting, it is preferred to convert this into massive metal by die expression to obtain maximum properties in fabricated articles, using normal extrusion techniques and equipment. If desired, however, other fabrication methods may be used such as, for example, rolling, forging, or, as above mentioned, casting into thinwalled molds. In the latter method both rapid quenching and fabrication are accomplished in the same operation.
  • the pellets are normally preheated to a temperature within the range of from about 600 F. to about 1000 F., and the extrusion container is at a temperature of from about 500 F. to about 850 F. If desired, the pellets may be precompa cted prior to extruding.
  • the alloys of the present invention must thereafter be solution heat treated, rapidly quenched, and aged.
  • Solution heat treating may be accomplished at a temperature within the range of from about 900 F. to about 1000 F. for a period of about one minute or more, followed by rapid quenching and aging the quenched article at a temperature of from about 300 to about 400 F. for a period of from about 5 hours to about 20 hours.
  • the extrude is solution heat treated at about 950 F. for about 15 minutes, water quenched, then artifically aged at 340 F. for 16 hours.
  • different heat treatment combinations can be employed, depending on the alloy system being used and the properties desired, without departing from thescope and substance of the invention.
  • the extrude may be quenched as it emerges from the die then subsequently aged, rather than solution heat treated, quenched, then aged.
  • fabrication refers to mechanical working procedures such as extruding, casting, rolling, forging, and spinning.
  • Example 1 A number of aluminum lbase alloys containing copper were prepared, each containing a predetermined amount of an additive metal listed in Table I above being a member selected from the group consisting of calcium, chromium, iron, manganese, mischmetal,
  • Standard test bars of all the alloys prepared as above' and aging the fabricated article. were made, and tested at room temperature, including 3.
  • the process of claim 2 wherein, the solution heat the blank or controls aforementioned for comparison, treating is carried out at a temperature within the range inorder to record percent elongation (percent E) (using of from about 900 F. to about 1000 F. tor a periodof a 2 inch gauge length), tensile strength (TS), and tensile time of at least about 1 minute, and rapidly quenching yield strength (TYS) (at 0.2% ofiset).
  • percent E percent elongation
  • TS tensile strength
  • TLS rapidly quenching yield strength
  • Table H which the range of from about 300 F. to about 400 F. for follows: a period of time of from about 5 to about 20 hours.
  • the process of claim 1 wherein, the weight concenexamples given above may represent an excess of copper tration of the selected additive metal in the aluminum with an additive metal over the minimum amount as base alloy of step 1) is from about 0.4. to about 2.2 required in accordance with. the above equation.
  • Wt. percent copper 4+KX where X is the concentration of the selected additive metal and K for each of said additives is as follows:
  • the extrusion temperature is from about 600 F. to about 1000 F.

Description

United States Patent This invention relates to aluminum base alloys and more particularly concerns a novel aluminum base alloy having special utilityin the preparation of high strength fabricated articles thereof, and the process for preparing these articles.
Though in general, aluminum base alloys containing copper possess only moderate strength, they are sufficiently strong for certain applications. In other applications requiring higher strength, however, these alloys have heretofore been limited in their utility.
The object of the present invention, therefore, is to provide a novel aluminum base alloy containing copper and capable of being processed to obtain high strength fabrications t-hereof, and the process for preparing these high strength fabrications.
A novel aluminum base alloy containing copper has now been developed in accordance with the invention wherein the strength has been substantially increased by incorporating therein certain other alloying metals, hereinafter referred to as additive metals, in a specific concentration range which is related to the copper content of the alloy, and processing the so -prepared novel alloy under particular conditions to obtain optimum strength.
All percentages referred to throughout this specificati-on are by weight unless otherwise indicated.
In general, this novel aluminum base alloy contains from at least 4 and preferably at least percent of copper to about percent of copper. The particular amount of copper used depends on the amount and kind of additive metal employed such metal being one selected from the group consisting of calcium, chromium, iron, manganese, mischmetal, nickel, and silicon. The amount of additive metal is generally between 0.3 and 10 percent of the alloy. The balance of the alloy is aluminum.
The minimum amount of copper employed in the alloy is as aforesaid dependent upon the amount of the additive metal if any and is determined in accordance with the empirical equation:
Weight percent copper=4.0 +KX where X is the weight percent in the alloy of the selected additive metal and K is a constant whose value depends upon the particular additive metal used and the copper content of the alloy, the values for K being hereinafter tabulated as shown in Table I. Preferably, however, the minimium amount of copper to be employed in the alloy is obtained by modifying the above equation by substituting therein 5 for the 4.
In Table I below, examples of both the oyerable and preferred concentration ranges for each additive metal, and the corresponding K values therefore are set forth. The 2nd and 3rd columns of proportions are for alloys containing 4% of copper and the 4th and 5th columns are for alloys containing 5% of copper.
'ice
TABLE I Operable Preferred Additive Metal Range K. Factor Range K. Factor Caleium 0.4- 2.2 5.0 0. 5-1.25 8.0 Chromium 0.3- 4. 0 0.5 1.0-3.0 1.0 Iron 1 25- 5. 0 2.0 2. 0-4.0 2. 5 Manganese 1. 5- 6. 0 0.5 2. 0-4. 0 0.8 Mischmetal 0.5- 7.3 1. 5 1.0-5.0 2.0 NickeL- 0. 5-10. 0 1. 3 1. 0-6. 0 1. 7 Silicon 1 5-10. 0 0 2.0-5. 0 0
Depending on the effect desired, other alloying elements conventionally employed can be added to the alloy of the present invention without detracting from its excellent strength properties. In carrying out the present invention, the novel aluminum base alloy as specified herein is prepared by using the alloying and melting techniques commonly employed 20 in the aluminum art. Highly desirable properties are obtained by rapidly solidifying the molten alloy as, for example, by jet or disc type atomizing devices either in cool air or in a cool inert atmosphere such as, for example, argon. The molten alloy may also be cast into ordinary ingots. However, the strength values thereby obtained are generally less satisfactory than when thinwalled cold molds are used. When the alloy is prepared by atomizing or pelleting, it is preferred to convert this into massive metal by die expression to obtain maximum properties in fabricated articles, using normal extrusion techniques and equipment. If desired, however, other fabrication methods may be used such as, for example, rolling, forging, or, as above mentioned, casting into thinwalled molds. In the latter method both rapid quenching and fabrication are accomplished in the same operation.
In extruding, the pellets are normally preheated to a temperature within the range of from about 600 F. to about 1000 F., and the extrusion container is at a temperature of from about 500 F. to about 850 F. If desired, the pellets may be precompa cted prior to extruding.
In order to obtain optimum strength, regardless of the method of fabrication employed, the alloys of the present invention must thereafter be solution heat treated, rapidly quenched, and aged. Solution heat treating may be accomplished at a temperature within the range of from about 900 F. to about 1000 F. for a period of about one minute or more, followed by rapid quenching and aging the quenched article at a temperature of from about 300 to about 400 F. for a period of from about 5 hours to about 20 hours. Normally the extrude is solution heat treated at about 950 F. for about 15 minutes, water quenched, then artifically aged at 340 F. for 16 hours. However, different heat treatment combinations can be employed, depending on the alloy system being used and the properties desired, without departing from thescope and substance of the invention. If desired, the extrude may be quenched as it emerges from the die then subsequently aged, rather than solution heat treated, quenched, then aged.
The term fabrication as used herein refers to mechanical working procedures such as extruding, casting, rolling, forging, and spinning.
The following examples serve to further illustrate the present invention.
3 I Example 1 A number of aluminum lbase alloys containing copper were prepared, each containing a predetermined amount of an additive metal listed in Table I above being a member selected from the group consisting of calcium, chromium, iron, manganese, mischmetal,
nickel, and silicon, the minimum percent of copper being within the range of from about 4.0 to about l within the herein specified ranges, and in a proportion 1 ;253:3 and determmed In accordance Wlth'the relative to that of copper in accordance with the above q I equation. Each alloy was either cast into ingots (I) 3 Wt. percent copper=4+KX inches in diameter or atomized into pellets (P) having a Size suchthat about 85% of the pellets passed through where X is the concentration of the selected add1- a No. 20 sieve and was retained on a No. 200 sieve tlvelnetel and the correspondmg K Value for each (US. Standard sieve, fine), while" the remainder passed addltwe Is as follows:
.through the No. 200 sieve. Calcium 5 Both the ingots and pellets of the above prepared Chromium 5 alloy compositions were extruded by first preheating to Iron 2 about 800 F. then placing the material in the con- M.mganese 5 tainer of a ram extruder, the container being about the Mischmetal 1. 5 same temperature as the pellets, and extruding at a Nickel 13, rate of about 5 feet per minute into strip having a Silicon 0 rectangular cross section 0.2 inch by 1.0 inch. The I resulting strips were then solution heat treated at 950 (2) solidifying the so-prepared aluminum base alloy F. for one hour, quenched, then aged for 16 hours molten droplets; at 340 F. (3) and fabricating said alloy into a useful shape by For comparison both ingots and pellets of the same rolling or forging, thereby providing a high strength aluminum base alloy but without any additive metals, 5 aluminum base alloy article. were extruded under the same conditions as above, in- 2. The process of claim 1 and including the steps of eluding heat treatment and aging. subsequently solution heat treating, rapidly quenching,
Standard test bars of all the alloys prepared as above' and aging the fabricated article. were made, and tested at room temperature, including 3. The process of claim 2 wherein, the solution heat the blank or controls aforementioned for comparison, treating is carried out at a temperature within the range inorder to record percent elongation (percent E) (using of from about 900 F. to about 1000 F. tor a periodof a 2 inch gauge length), tensile strength (TS), and tensile time of at least about 1 minute, and rapidly quenching yield strength (TYS) (at 0.2% ofiset). Representative the extrude, followed by aging at a temperature within results of these tests are presented in Table H which the range of from about 300 F. to about 400 F. for follows: a period of time of from about 5 to about 20 hours.
' TABLE II 1,000 p.s.i.
Example Percent Percent Form Percent E Cu Additive .TYS TS (Blank) 5.0 2.0 Ca I 15 13 30 (1 12.0 1.0 Ca I 10 43 02 12.0 1.0 Ca P 0 51 70 5.0 2.0 Cr I 11 27 30 8.0 2.0 Cr. I s 52 8.0 2.0 Cr P 7 72 7.5 2.0Fe I 15 20 42 9.5 2.0 Fe.-- I 10 38 55 10.0 2.0 Fe.-- I s 51 70 4.5 3.0 Mn- P 9 2s 53. 7.0 3.0Mn I 10 40 55 8.0 3.0Mn P 0 54 74 5.0 5.0MM I 17 12 34 10.0 3.0MM I 12 39 00 5.0 3.0 Ni I 20 11 33 10.0 3.0 Ni I 10 39 50 15.0 3.0Ni P 5 52 70 5.5 5.0 si P 10' 50 59 1 P.s.i. =pounds per square inch of cross section.
It is understood that the copper content in some 4. The process of claim 1 wherein, the weight concenexamples given above may represent an excess of copper tration of the selected additive metal in the aluminum with an additive metal over the minimum amount as base alloy of step 1) is from about 0.4. to about 2.2 required in accordance with. the above equation. percent for calcium, from about 0.3 to about 4.0 percent The figures of the blanks in Table II illustrate the 60 for chromium, from about 1.25 to about 5.0 percent for lower strength resulting because of msuflicient copper iron, from about 1.5 to about 6.0 percent for manganese, 111 tha f y- In contrast alloys the lflventloll as from about 0.5 to about 7.3 percent for misohmetal, from Show P E 1 to 12 lnfllll'slve have 111811 Strength about 0.5 to about 10.0 percent for nickel, and from due to the addition of certain metals when suflicient about 5 to about 101) for Silicon c/opper isthprzesenti1 as protgided for under tlfie pglesegl 5. A process for preparing high strength aluminum en a percen or more or Pre era y base alloy pellet extrusions which comprises: cent or more, but less than 15% of copper. 1 d
I claim: provi ing in EItOIIllZC or pelleted form an alumi- 1' A process for preparing high strength aluminum num base alloy consisting essentially of from about base alloy articles which comprises. 4.0 to about 15 percent copper, from about 0.3 to
(1) preparing an aluminum base alloy in molten drop- 10 Rel-Cent an "i f metal; the balance let form consisting essentially of from about 4.0 to bemg alummum, sald metal bemg f member about 15 weight percent copper, fr about 3 selected from the group consisting of calcium, chroto about 10.0 weight percent of an additive metal, mium, iron, manganese, mischmetal, nickel, and Silithe balance being aluminum, said additive metal Con, t minimum Percent PP- being Within the range from about 4.0 to about 15.0 percent and determined in accordance with the equation:
Wt. percent copper=4+KX where X is the concentration of the selected additive metal and K for each of said additives is as follows:
Calcium 5.0 Chromium 0.5 Iron 2.0 Manganese 0.5 Mischmetal 1.5 Nickel 1.3 Silicon (2) extruding the atomized or pelleted aluminum base alloy thereby to produce a high strength aluminum extrusion.
6. The process of claim 5 wherein, the extrusion temperature is from about 600 F. to about 1000 F.
7. The process of claim 5 and including the steps of subsequently solution heat treating, rapidly quenching, and aging the extrusion product.
8. The process of claim 7 wherein the solution heat treating is carried out at a temperature within the range from about 900 F. to about 1000 F. for a period of time of at least about 1 minute, and the extrude quenched,
6 followed by aging at a temperature within the range from about 300 F. to about 400 F. for a period of time of from about 5 to about 20 hours.
9. The process of claim 6 and including the steps of quenching the extrude, and subsequently aging the soquenched extrude.
References Cited by the Examiner OTHER REFERENCES Alcoa Structural Handbook, 1958, page 34.
DAVID L. RECK, Primary Examiner.
H. F. SAITO, Assistant Examiner.

Claims (1)

1. A PROCESS FOR PREPARING HIGH STRENGTH ALUMINUM BASE ALLOY ARTICLES WHICH COMPRISES: (1) PREPARING AN ALUMINUM BASE ALLOY IN MOLTEN DROPLET FORM CONSISTING ESSENTIALLY OF FROM ABOUT 4.0 TO ABOUT 15.0 WEIGHT PERCENT COPPER, FROM ABOUT 0.3 TO ABOUT 10.0 WEIGHT PERCENT OF AN ADDITIVE METAL, THE BALANCE BEING ALUMINUM, SAID ADDITIVE METAL, BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CALCIUM, CHROMIUM, IRON, MANGANESE, MISCHMETAL, NICKEL, AND SILICON, THE MINIMUM PERCENT OF COPPER BEING WITHIN THE RANGE OF FROM ABOUT 4.0 TO ABOUT 15.0 PERCENT AND DETERMINED IN ACCORDANCE WITH THE EQUATION:
US283595A 1963-05-27 1963-05-27 High strength fabrications of aluminum base alloys containing copper Expired - Lifetime US3282745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US283595A US3282745A (en) 1963-05-27 1963-05-27 High strength fabrications of aluminum base alloys containing copper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US283595A US3282745A (en) 1963-05-27 1963-05-27 High strength fabrications of aluminum base alloys containing copper

Publications (1)

Publication Number Publication Date
US3282745A true US3282745A (en) 1966-11-01

Family

ID=23086772

Family Applications (1)

Application Number Title Priority Date Filing Date
US283595A Expired - Lifetime US3282745A (en) 1963-05-27 1963-05-27 High strength fabrications of aluminum base alloys containing copper

Country Status (1)

Country Link
US (1) US3282745A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615343A (en) * 1968-07-12 1971-10-26 Ethyl Corp Process for decomposing intermetallic compounds in metals
DE2755976A1 (en) * 1976-12-17 1978-06-29 Aluminum Co Of America METAL WORKPIECE AND POWDER ALLOY AND PROCESS FOR THE MANUFACTURING OF METAL WORKPIECES FROM SILICON AND POWDER ALLOY ON AN ALUMINUM BASE

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480846A (en) * 1922-02-10 1924-01-15 Aluminium Ind Ag Aluminum alloy
US1671952A (en) * 1926-06-07 1928-05-29 Barnhart Brothers & Spindler Metal alloy
US2062329A (en) * 1932-04-21 1936-12-01 Aluminum Co Of America Thermal treatment of aluminum alloys containing copper
US2249349A (en) * 1939-08-23 1941-07-15 Aluminum Co Of America Method of hot working an aluminum base alloy and product thereof
US2249353A (en) * 1939-08-23 1941-07-15 Aluminum Co Of America Method of working aluminum and product thereof
US2459492A (en) * 1944-02-25 1949-01-18 Rolls Royce Aluminum copper alloy
US2656270A (en) * 1949-10-13 1953-10-20 James B Russell Aluminum alloy containing mischmetal
US2706680A (en) * 1952-02-27 1955-04-19 Aluminum Co Of America Aluminum base alloy
US2809891A (en) * 1954-10-12 1957-10-15 Aluminum Co Of America Method of making articles from aluminous metal powder
US2865796A (en) * 1955-10-12 1958-12-23 Rosenkranz Wilhelm Method of increasing stress corrosion resistance of aluminum alloys

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480846A (en) * 1922-02-10 1924-01-15 Aluminium Ind Ag Aluminum alloy
US1671952A (en) * 1926-06-07 1928-05-29 Barnhart Brothers & Spindler Metal alloy
US2062329A (en) * 1932-04-21 1936-12-01 Aluminum Co Of America Thermal treatment of aluminum alloys containing copper
US2249349A (en) * 1939-08-23 1941-07-15 Aluminum Co Of America Method of hot working an aluminum base alloy and product thereof
US2249353A (en) * 1939-08-23 1941-07-15 Aluminum Co Of America Method of working aluminum and product thereof
US2459492A (en) * 1944-02-25 1949-01-18 Rolls Royce Aluminum copper alloy
US2656270A (en) * 1949-10-13 1953-10-20 James B Russell Aluminum alloy containing mischmetal
US2706680A (en) * 1952-02-27 1955-04-19 Aluminum Co Of America Aluminum base alloy
US2809891A (en) * 1954-10-12 1957-10-15 Aluminum Co Of America Method of making articles from aluminous metal powder
US2865796A (en) * 1955-10-12 1958-12-23 Rosenkranz Wilhelm Method of increasing stress corrosion resistance of aluminum alloys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615343A (en) * 1968-07-12 1971-10-26 Ethyl Corp Process for decomposing intermetallic compounds in metals
DE2755976A1 (en) * 1976-12-17 1978-06-29 Aluminum Co Of America METAL WORKPIECE AND POWDER ALLOY AND PROCESS FOR THE MANUFACTURING OF METAL WORKPIECES FROM SILICON AND POWDER ALLOY ON AN ALUMINUM BASE

Similar Documents

Publication Publication Date Title
EP1840235B1 (en) Magnesium alloy and corresponding production method
DE112005000511B4 (en) Magnesium wrought alloy with improved extrudability and moldability
US4028141A (en) Aluminum iron silicon alloy
US3938991A (en) Refining recrystallized grain size in aluminum alloys
DE2551294B2 (en) Process for making dispersion strengthened aluminum alloy products
DE2235168C2 (en) Process for the production of aluminum alloys and their use
US4140549A (en) Method of fabricating an aluminum alloy electrical conductor
DE1558622B2 (en) Alloys based on copper
US4082573A (en) High tensile strength aluminum alloy conductor and method of manufacture
US3226267A (en) High strength aluminum alloy extrusion process and product
US3527601A (en) Process of making creep-resistant zinc-base alloys
DE2049546C3 (en) Process for the powder-metallurgical production of a dispersion-strengthened alloy body
US3958987A (en) Aluminum iron cobalt silicon alloy and method of preparation thereof
US3265493A (en) Aluminum base pellet alloys containing copper and magnesium and process for producing the same
JP2865499B2 (en) Superplastic aluminum-based alloy material and method for producing superplastic alloy material
US3282745A (en) High strength fabrications of aluminum base alloys containing copper
US3252841A (en) Aluminum alloy
US3816187A (en) Processing copper base alloys
US3307978A (en) Process for preparing high strength fabricated articles from aluminum-base alloys containing copper
US3920411A (en) Aluminum alloy electrical conductor and method for making same
US3960606A (en) Aluminum silicon alloy and method of preparation thereof
US3291654A (en) Process for preparing high strength fabricated articles from aluminumbase alloys containing magnesium and copper
EP0540056B1 (en) Compacted and consolidated material of aluminum-based alloy and process for producing the same
US3236632A (en) High strength aluminum alloy for pellet extrusion and product
US3177073A (en) High strength aluminum alloy for pellet extrusion and product