CN100436636C - Magnesium alloy heat treatment process with combined current treatment - Google Patents
Magnesium alloy heat treatment process with combined current treatment Download PDFInfo
- Publication number
- CN100436636C CN100436636C CNB2006101255183A CN200610125518A CN100436636C CN 100436636 C CN100436636 C CN 100436636C CN B2006101255183 A CNB2006101255183 A CN B2006101255183A CN 200610125518 A CN200610125518 A CN 200610125518A CN 100436636 C CN100436636 C CN 100436636C
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- current
- current density
- heat treatment
- electric current
- 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 - Fee Related
Links
Images
Abstract
The present invention is magnesium alloy heat treatment process combined with current treatment. The magnesium alloy heat treatment process features its combination with current treatment in one of following four modes: 1. solution quenching with current applied in the current density of 2-20 A/sq cm and no ageing after solution quenching; 2. solution quenching with current applied in the current density of 2-20 A/sq cm and ageing after solution quenching; 3. solution quenching and ageing after solution quenching with current applied in the current density of 2-100 A/sq cm; and 4. solution quenching with current applied in the current density of 2-20 A/sq cm and ageing after solution quenching with current applied in the current density of 2-100 A/sq cm. The magnesium alloy heat treatment process has shortened period, raised production efficiency, reduced oxidation and raised magnesium alloy performance.
Description
Technical field
The present invention relates to a kind of magnesium alloy heat treatment process, belong to magnesium alloy thermal treatment field.
Background technology
The traditional solution strengthening and the processing method of ageing treatment can be improved the performance of casting alloy.If magnesium alloy does not carry out timeliness through after the solution hardening, can improve its tensile strength and elongation simultaneously.But, thereby need long heat-up time to guarantee that strengthening phase fully dissolves because the diffusion of magnesium alloy interalloy atoms of elements is slower.If magnesium alloy then carries out artificial aging after solution treatment, though can reduce its part plasticity, can improve its yield strength, but heat-up time, length was the problem that this process exists equally.When using these technologies in actual production, production efficiency will inevitably be subjected to the influence of these factors.
Summary of the invention
The object of the present invention is to provide a kind of magnesium alloy heat treatment process in conjunction with current processing, this method can shorten solution strengthening or artificially aged time, enhances productivity, and reduces magnesium alloy because of being in the high temperature amount of oxidation in following time for a long time; Improve the performance of magnesium alloy.
To achieve these goals, technical scheme of the present invention is: a kind of magnesium alloy heat treatment process in conjunction with current processing is characterized in that: in traditional magnesium alloy heat treatment process, adopt one of following four kinds of methods that magnesium alloy is applied electric current:
1) do not carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density of employing is 2～20A/cm
2
2) carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density of employing is 2～20A/cm
2
3) carry out timeliness after the solution hardening, apply electric current in the ag(e)ing process, the current density of employing is 2～100A/cm
2
4) carry out timeliness after the solution hardening, all apply electric current in solid solution process and the ag(e)ing process, the current density change scope that adopts in the solid solution process is 2～20A/cm
2, the current density change scope that adopts in the ag(e)ing process is 2～100A/cm
2
Described magnesium alloy is made pole, and the pole two ends adopt conduction, sludge proof anchor clamps to insert two electrodes of adjustable current source.
Cover sulfurous iron ore on the described magnesium alloy.
The principle of work of this magnesium alloy heat treatment process in conjunction with current processing is: magnesium alloy is in solution strengthening or artificial aging process, and magnesium alloy is near a certain temperature of heat treating regime regulation, at this moment allows 2～20A/cm
2(apply 2～100A/cm in the ag(e)ing process
2) galvanic current pass through magnesium alloy; The specific conductivity difference of different phases in the magnesium alloy in addition, exists the microcell that contains segregation in various degree in the magnesium alloy, their conductive capability also is different; Like this, when electric current is flowed through magnesium alloy, to produce different heat effect at different microcells, because of size of current suitable, the temperature of magnesium alloy integral body still is near the original set(ting)value, the heat that produces only produces small disturbance to the temperature of microcell, the separating out of strengthening phase when the diffusion of alloying element or artificial aging when helping solution strengthening.Thereby compare with traditional technology, method of the present invention can shorten the used time of heating, enhances productivity, and reduces magnesium alloy because of being in the high temperature amount of oxidation in following time for a long time.Simultaneously, under the effect in outfield, change has also taken place in the distribution of phase and microtexture in the magnesium alloy, and is more excellent when the performance ratio of magnesium alloy uses traditional technology.
In the inventive method implementation process, do not make under the magnesium alloy condition overbumt, electric current can be regulated in the larger context.Because the magnesium alloy overall resistivity is very little, the electric power that consumes during energising is little, selects low pressure, big electric current, low power adjustable current source to get final product, and facility investment is little like this, has saved the energy again.The big I of electrical current can accomplish to take into account simultaneously efficient like this and require and two aspects of specification of quality according to the requirement of material property and heat-up time is rationally regulated.
Description of drawings
Device synoptic diagram when Fig. 1 implements for the inventive method.
Among the figure: 1-crucible electrical resistance furnace, 2-refractory brick, 3-magnesium alloy, 4-adjustable current source.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Be example so that magnesium alloy AZ91D is heat-treated: with no nickel steel crucible preparation AZ91D alloy, its alloying constituent mass percent is: Al (8.90); Zn (0.637); Mn (0.2085); Be (0.0010); Si (0.022); Fe (0.0024); Cu (0.0014); Ni (0.0008); Mg (all the other).Pour into a mould with the spheroidal graphite cast iron metal mold, make the pole of some φ 10mm * 120mm.Because the cross section of pole is consistent, so guaranteed the consistence of current density on macroscopic view on the cross section.Device when the inventive method is implemented as shown in Figure 1, the pole two ends adopt the good sludge proof anchor clamps of conductivity to insert two electrodes of adjustable current source 4, pole (magnesium alloy 3) is inserted on the refractory brick 2 that is positioned at crucible electrical resistance furnace 1, during galvanization, guarantee carrying out smoothly of whole heat treatment process.This heat treating regime (adopts 420 ℃ * 16h based on traditional heat treating regime T6 in the solid solution process, ag(e)ing process adopt 200 ℃ * 8h), adopt one of four kinds of different concrete technologies during galvanization, technology and result that it is corresponding are as follows: one, do not carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density change scope of employing is 2～20A/cm
2(bound of current density with and interval value can both realize the present invention); The traditional technology that does not add electric current is compared, and under the situation that shortens 3～8h heat-up time, the strength of alloy after the processing improves 3.5～18.9%, and extensibility improves 5.3～21%, and the oxidation consumption amount reduces 18.5～41.2%.Two, carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density change scope of employing is 2～20A/cm
2(bound of current density with and interval value can both realize the present invention); The traditional technology that does not add electric current is compared, and under the situation that shortens solid solution 3～8h heat-up time, the strength of alloy after the processing improves 8.9～23%, and extensibility improves 9.3～31.2%, and the oxidation consumption amount reduces 10.3～32.6%.Three, carry out timeliness after the solution hardening, apply electric current in the ag(e)ing process, the current density change scope of employing is 2～100A/cm
2(bound of current density with and interval value can both realize the present invention); The traditional technology that does not add electric current is compared, and under the situation that shortens timeliness 1～3.5h heat-up time, the strength of alloy after the processing improves 5.1～12.3%, and extensibility improves 6.4～15.6%, and the oxidation consumption amount reduces 5.2～11.2%.Four, carry out timeliness after the solution hardening, all apply electric current in solid solution process and the ag(e)ing process, the current density change scope that adopts in the solid solution process is 2～20A/cm
2(bound of current density with and interval value can both realize the present invention), the current density change scope that adopts in the ag(e)ing process is 2～100A/cm
2(bound of current density with and interval value can both realize the present invention); The traditional technology that does not add electric current is compared, shorten at the same time under the situation of solid solution 2～7h heat-up time and timeliness 1.5～3h heat-up time, strength of alloy after the processing improves 16.4～31.4%, and extensibility improves 14.5～35.2%, and the oxidation consumption amount reduces 7.8～17.5%.
In the process that magnesium alloy is handled, should take suitable anti-oxidation measure, adopt the method that on magnesium alloy, covers sulfurous iron ore (FeS) in this experiment.The selection of concrete technology category, the size and the selection of heat-up time of electric current should be taken all factors into consideration according to efficient and two requirements of quality, raising the efficiency can be by suitably strengthening electric current, improve quality and then adopt longer relatively energising heat-up time, the relative less current of the appropriate to the occasion employing of long-time heating influences performance to prevent local generation thermal accumlation.
Claims (2)
1. magnesium alloy heat treatment process in conjunction with current processing is characterized in that: in traditional magnesium alloy heat treatment process, adopt one of following four kinds of methods that magnesium alloy is applied electric current:
1) do not carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density of employing is 2～20A/cm
2
2) carry out timeliness after the solution hardening, apply electric current in the solid solution process, the current density of employing is 2～20A/cm
2
3) carry out timeliness after the solution hardening, apply electric current in the ag(e)ing process, the current density of employing is 2～100A/cm
2
4) carry out timeliness after the solution hardening, all apply electric current in solid solution process and the ag(e)ing process, the current density change scope that adopts in the solid solution process is 2～20A/cm
2, the current density change scope that adopts in the ag(e)ing process is 2～100A/cm
2
Described magnesium alloy is made pole, and the pole two ends adopt conduction, sludge proof anchor clamps to insert two electrodes of adjustable current source.
2. a kind of magnesium alloy heat treatment process in conjunction with current processing according to claim 1 is characterized in that: cover sulfurous iron ore on the described magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101255183A CN100436636C (en) | 2006-12-19 | 2006-12-19 | Magnesium alloy heat treatment process with combined current treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101255183A CN100436636C (en) | 2006-12-19 | 2006-12-19 | Magnesium alloy heat treatment process with combined current treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1974833A CN1974833A (en) | 2007-06-06 |
| CN100436636C true CN100436636C (en) | 2008-11-26 |
Family
ID=38125175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101255183A Expired - Fee Related CN100436636C (en) | 2006-12-19 | 2006-12-19 | Magnesium alloy heat treatment process with combined current treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100436636C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220528A (en) * | 2011-07-18 | 2011-10-19 | 福州大学 | Protection method for preventing oxidation-combustion in smelting magnesium alloy |
| CN114182185A (en) * | 2021-12-03 | 2022-03-15 | 上海航天精密机械研究所 | Microwave-assisted solution treatment method for magnesium alloy |
| CN114703412B (en) * | 2022-03-29 | 2022-08-30 | 吉林大学 | High-performance microalloyed Mg-Al-Ca-Mn alloy and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111438A (en) * | 1995-10-18 | 1997-04-28 | Nisshin Steel Co Ltd | Zinc-magnesium alloy plated steel sheet excellent in corrosion resistance in edge face and its production |
| US6602364B1 (en) * | 1999-02-12 | 2003-08-05 | Norsk Hydro A.S. | Aluminium alloy containing magnesium and silicon |
| CN1475592A (en) * | 2003-07-11 | 2004-02-18 | 武汉理工大学 | High Zinc aluminium rare earth magnesium alloy |
-
2006
- 2006-12-19 CN CNB2006101255183A patent/CN100436636C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111438A (en) * | 1995-10-18 | 1997-04-28 | Nisshin Steel Co Ltd | Zinc-magnesium alloy plated steel sheet excellent in corrosion resistance in edge face and its production |
| US6602364B1 (en) * | 1999-02-12 | 2003-08-05 | Norsk Hydro A.S. | Aluminium alloy containing magnesium and silicon |
| CN1475592A (en) * | 2003-07-11 | 2004-02-18 | 武汉理工大学 | High Zinc aluminium rare earth magnesium alloy |
Non-Patent Citations (6)
| Title |
|---|
| 电场固溶处理对1420铝锂合金组织和性能的影响. 刘北兴等.材料科学与工艺，第8卷第2期. 2000 |
| 电场固溶处理对1420铝锂合金组织和性能的影响. 刘北兴等.材料科学与工艺，第8卷第2期. 2000 * |
| 电场热处理对1420合金组织与性能的影响. 刘北兴.材料科学与工艺，第10卷第2期. 2002 |
| 电场热处理对1420合金组织与性能的影响. 刘北兴.材料科学与工艺，第10卷第2期. 2002 * |
| 磁场、电场对金属材料热加工过程中组织和性能的影响. 程兴德等.钢铁钒钛，第26卷第3期. 2005 |
| 磁场、电场对金属材料热加工过程中组织和性能的影响. 程兴德等.钢铁钒钛，第26卷第3期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1974833A (en) | 2007-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103952605B (en) | A kind of preparation method of middle strength aluminium alloy monofilament | |
| CN103966475B (en) | A kind of copper chromium titanium alloy osculatory and preparation method thereof | |
| CN102230113B (en) | Heat resistant aluminum alloy conductor material and preparation method thereof | |
| CN105950931B (en) | The high-strength high hard magnesium alloy of controllable reaction and its manufacturing method of component occurs with water | |
| CN102760508B (en) | High-conductivity creep-resistant aluminium alloy cable conductor containing Hf and Ce and preparation method thereof | |
| CN107779620B (en) | A method of regulation CoCrFeNiCu high-entropy alloy performance | |
| CN106834824B (en) | A kind of high strength and high conductivity rate alumina-base material and preparation method thereof containing scandium, yttrium | |
| CN108385007A (en) | A kind of high performance heat resistant deformed magnesium alloy material of low cost and preparation method thereof | |
| Chao et al. | Effect of Zr and Sc on mechanical properties and electrical conductivities of Al wires | |
| CN106893899A (en) | A kind of built on stilts heat resistant aluminum alloy conductor material and preparation method thereof | |
| CN108315602A (en) | A kind of railway rare earth aluminium alloy cable conductor and preparation method | |
| CN104451314B (en) | A kind of high-strength temperature-resistant cast magnesium alloy and preparation method | |
| CN107058796A (en) | A kind of microalloying of rare earth acid bronze alloy, preparation method and the method for being squeezed into bar | |
| CN104946943A (en) | Al-Er-Cu high-strength high-electric conductivity aluminium alloy and thermomechanical treatment technology thereof | |
| CN100436636C (en) | Magnesium alloy heat treatment process with combined current treatment | |
| CN107201461A (en) | A kind of high-strength high-plastic biphase cooperative precipitation type Cu alloy material and preparation method thereof | |
| CN108315581A (en) | A kind of low beryllium content copper alloy and preparation method thereof of high intensity high softening temperature | |
| CN106868350B (en) | Strong heat-resistant aluminum alloy wire and its manufacture method in one kind | |
| CN106544533B (en) | A kind of preparation method of high-strength highly-conductive conducting wire copper alloy | |
| CN106555073B (en) | A kind of high-strength highly-conductive rare earth copper magnesium alloy contact wire and preparation method thereof | |
| CN102031467B (en) | Method for preparing in-situ deformation Cu-Ag composite material by using magnetic field | |
| CN101225486A (en) | Copper-based in-situ composite material and preparation method thereof | |
| CN106676318B (en) | A kind of asynchronous traction motor rotor bar brass material containing zirconium and preparation method thereof | |
| CN101724798B (en) | Multiplex heat treatment method for Cu-12 percent Fe alloy | |
| CN103952601B (en) | A kind of high conductivity heat-resisting aluminium alloy of alkaline including earth metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20141219 |
|
| EXPY | Termination of patent right or utility model |