CN102433421A - Amorphous alloy surface treatment process - Google Patents
Amorphous alloy surface treatment process Download PDFInfo
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- CN102433421A CN102433421A CN2011104214379A CN201110421437A CN102433421A CN 102433421 A CN102433421 A CN 102433421A CN 2011104214379 A CN2011104214379 A CN 2011104214379A CN 201110421437 A CN201110421437 A CN 201110421437A CN 102433421 A CN102433421 A CN 102433421A
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Abstract
The invention discloses an amorphous alloy surface treatment process, which comprises the step of adopting metal particles and nonmetal particles to perform injection treatment on the surface of an amorphous alloy, wherein the metal particles are one or more of steel shots, iron shots, steel sand and iron sand; and the nonmetal particles are one or more of slot materials and sand materials of ceramics and glass. By the amorphous alloy surface treatment process in the invention, the plastic deformation capability and impact toughness of the amorphous alloy can be improved, the surface roughness of the amorphous alloy can be improved, and the workpiece deformation problem in the injection treatment process of the prior art is solved, thereby making applications of amorphous alloys in high-strength precious workpieces and workpieces with high appearance requirements possible.
Description
Technical field
The invention belongs to non-crystaline amorphous metal manufacturing technology field, more specifically, the present invention relates to a kind of non-crystaline amorphous metal process of surface treatment.
Background technology
Non-crystaline amorphous metal has been the focus of research since nineteen sixty is found first always.Adopt multi-element alloyed method the nineties in 20th century, reduced the critical cooling velocity of non-crystaline amorphous metal, realized the preparation of block amorphous alloy, makes the practical applications of said material become possibility.Non-crystaline amorphous metal short range order, the unordered structure of long-range make it have excellent mechanical properties such as HS, high elastic limit, wear resistance is good.But owing to do not have dislocation glide, typical deformation mechanism such as twin, distortion can only realize through the formation and the expansion of shear zone.Room temperature down cut band causes the softening and acceleration expansion of matrix, forms crackle very soon, makes the block amorphous alloy brittle failure, has limited the practical applications of such type material.How to overcome the fragility of amorphous alloy material, be the research direction in this field always.
In order to increase the plasticity of amorphous alloy material, solve its brittle failure problem, main employing is complex method at present, promptly compound second phase equates like nano particle, dendrite in bulk amorphous alloys.The representativeness work of this respect is that the W.L.Johnson of California, USA Polytechnics accomplishes.Complex method can effectively improve plasticity really, but causes preparation technology complicated more, the material flowability variation, and production cost improves.
Non-crystaline amorphous metal and toughness material composite methods; Complex process, cost height; Investigators are seeking simpler method simultaneously, discover that adopting the method (promptly spraying ceramic small-particle to material surface) of shot-peening to carry out surface treatment to bulk amorphous alloys can play the effect of introducing the surface compression unrelieved stress.Bead blasted surfaces is handled can introduce a large amount of shear zones in block non-crystalline alloy material; This makes the compression process of block non-crystalline alloy material more near uniform deformation; Shear zone is difficult to expand very soon (receiving the restriction of unrelieved stress) and becomes crackle, thereby can effectively improve the plasticity of block non-crystalline alloy material.
In addition, existing patent discloses the method that shot-blast process improves non-crystaline amorphous metal toughness, wearing quality and fatigue property, has obtained extraordinary result of use.
Though; The shot-blast process method has well been improved plastic deformation ability, toughness and the fatigue property of non-crystaline amorphous metal; But brought bigger roughness to workpiece simultaneously, the unrelieved stress that surface treatment simultaneously produces can cause the distortion of workpiece, especially for the thin workpiece of workpiece; The deformation that workpiece produces is bigger, thereby has influenced the preparation precision and the result of use of workpiece.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least.For this reason, one object of the present invention is to propose a kind of non-crystaline amorphous metal process of surface treatment, and this non-crystaline amorphous metal process of surface treatment has one of advantage at least: process method is simple, treatment effect good, processing cost is low, efficient is high.
Non-crystaline amorphous metal process of surface treatment according to the embodiment of the invention comprises: utilize metallic particles and non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface.
Non-crystaline amorphous metal process of surface treatment according to the embodiment of the invention; Because metallic particles has the characteristics that density is big, toughness is high, hardness is little usually; Non-metallic material have bigger kinetic energy relatively; Can produce bigger hitting dynamics to the non-crystaline amorphous metal surface, thereby produce enough deformation, help the generation of shear zone; Non-metallic particle is with respect to metallic particles; Usually have the big characteristics of low density, high firmness and fragility, because the little then kinetic energy of density is little, therefore the hitting dynamics to the non-crystaline amorphous metal surface is little; And because the high fragility of non-metallic particle hardness is big; The non-crystaline amorphous metal surface is had better cutting force, can eliminate, make alloy have the surface of uniformity more the defective and the fine crack on non-crystaline amorphous metal surface.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the treatment process gained sample stress-strain curve diagram according to the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
Non-crystaline amorphous metal process of surface treatment involved in the present invention mainly comprises and utilizes metallic particles and non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface.
Non-crystaline amorphous metal process of surface treatment involved in the present invention is applicable to the surface treatment of any amorphous alloy material.Consider when the less amorphous alloy material workpiece surface of thickness is carried out treat mechanically; Because less stress can cause the flexural deformation of amorphous alloy material; Therefore the unrelieved stress of surface treatment generation is very easy to cause the non-crystaline amorphous metal workpiece deformation and can't guarantees dimensional precision; And when adopting the non-crystaline amorphous metal process of surface treatment that the present invention relates to that whole non-crystaline amorphous metal workpiece is carried out surface treatment; Then can improve effectively or eliminate the distortion that unrelieved stress causes, so the present invention is particularly useful for surperficial treat mechanically, the especially thickness of the less amorphous alloy material workpiece of the thickness amorphous alloy material workpiece less than 2mm.
Material about metallic particles it will be appreciated that, the plastic deformation of non-crystaline amorphous metal is to accomplish through the formation in shear zone LV zone and expansion; Being formed with of shear zone is beneficial to amorphous alloy plasticity and flexible improvement; Based on this, preferably have the metallic particles of the characteristics that density is big, toughness is high, hardness is little among the present invention, like one or more combinations in shot, shot, steel sand or the iron sand strike is sprayed on the non-crystaline amorphous metal surface; Because metallic particles has big kinetic energy; Can produce bigger hitting dynamics to the non-crystaline amorphous metal surface, thereby produce enough deformation, help the generation of shear zone.
Material about non-metallic particle it will be appreciated that non-metallic particle is with respect to metallic particles; Have the big characteristics of low density, high firmness and fragility, the little then kinetic energy of density is little, and is little to the hitting dynamics on non-crystaline amorphous metal surface; But because the high fragility of non-metallic particle hardness is big; The non-crystaline amorphous metal surface is had better cutting force, can eliminate, make alloy have the surface of uniformity more the defective and the fine crack on non-crystaline amorphous metal surface; So select it, especially the ball material of preferably ceramic, glass or in the sand material one or more.
About the size of metallic particles and non-metallic particle, preferably, the metallic particles median size is between 0.05mm～1mm.Further preferably, the non-metallic particle median size is between 0.05mm～0.25mm.Through for metallic particles, adopting thinner non-metallic particle relatively; Utilize less non-metallic particle cutting and rubbing effect; Can effectively improve and improve the roughness on non-crystaline amorphous metal surface; And the structural state of alloy surface and stressed condition are reached unanimity, thereby can effectively improve even eliminate the distortion that the non-crystaline amorphous metal workpiece produces in the shot peening process.Preferably, the volume ratio of metallic particles and non-metallic particle both can obtain material plasticity and toughness preferably between 1: 5 and 1: 20, can obtain less surfaceness again, and the non-crystaline amorphous metal workpiece has the deformation that less surface treatment produces simultaneously.
Injecting time and pressure about non-crystaline amorphous metal process of surface treatment involved in the present invention do not have particular requirement; Can adjust according to desired material property of non-crystaline amorphous metal workpiece and surface effect; Preferred injecting time is between 10S～60S, and preferred spraying pressure is between 0.2MPa～1MPa.
In addition; Inject process about non-crystaline amorphous metal process of surface treatment involved in the present invention does not have particular restriction in proper order; As long as can play jeting effect to the non-crystaline amorphous metal surface; For example can carry out inject process with metallic particles to the non-crystaline amorphous metal surface earlier, utilize non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface then; Can utilize non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface earlier, utilize metallic particles that inject process is carried out on the non-crystaline amorphous metal surface then; The composite grain that also can utilize non-metallic particle and metallic particles to constitute carries out inject process to the non-crystaline amorphous metal surface; Also can utilize non-metallic particle respectively and utilize metallic particles simultaneously inject process to be carried out on the non-crystaline amorphous metal surface; Can also utilize non-metallic particle and utilize metallic particles alternately the non-crystaline amorphous metal surface to be sprayed.
Through specific embodiment the present invention is described below.
Embodiment 1
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
With median size is to add automatic sand-blasting machine behind the shot particle of 0.2mm and the white fused alumina particle thorough mixing that median size is 0.15mm, under the 0.5MPa condition, the non-crystaline amorphous metal blank is inject process 20s, obtains to spray sample.
Embodiment 2
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
With median size is to add automatic sand-blasting machine behind the iron sand particle of 0.2mm and the quartz sand particle thorough mixing that median size is 0.1mm, under the 0.3MPa condition, the non-crystaline amorphous metal blank is inject process 30s, obtains to spray sample.
Embodiment 3
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
Iron sand particle and the median size that with median size is 0.2mm is that the silica sand of 0.1mm adds respectively in the different injection cavitys of automatic sand-blasting machine; Under the 0.3MPa condition; Iron sand particle and quartz sand particle are inject process 30s to the non-crystaline amorphous metal blank simultaneously, obtain to spray sample.
Embodiment 4
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
With median size is that the iron sand particle of 0.2mm joins in the injection cavity of automatic sand-blasting machine, under the 0.3MPa condition, the non-crystaline amorphous metal blank is inject process 30s, obtains to spray sample; Be that the silica sand of 0.1mm joins in the injection cavity of automatic sand-blasting machine with median size then, under the 0.3MPa condition, the non-crystaline amorphous metal blank be inject process 30s, obtain to spray sample.
Embodiment 5
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
With median size is that the quartz sand particle of 0.1mm joins in the injection cavity of automatic sand-blasting machine, under the 0.3MPa condition, the non-crystaline amorphous metal blank is inject process 30s, obtains to spray sample; Be that the iron sand particle of 0.2mm joins in the injection cavity of automatic sand-blasting machine with median size then, under the 0.3MPa condition, the non-crystaline amorphous metal blank be inject process 30s, obtain to spray sample.
Simultaneously, in order not compare with the injection sample that adopts traditional shot peening with carrying out surface-treated non-crystaline amorphous metal blank, the sample of also adopted similar prepared Comparative Examples 1 and Comparative Examples 2.Specific as follows:
Comparative Examples 1
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
The non-crystaline amorphous metal blank is not done inject process; Directly adopt omnipotent mechanics tensile testing machine that the non-crystaline amorphous metal blank is carried out the anti-bending strength test, span is 50mm, and loading rate is 2mm/Min; Adopt the impelling strength of non-notch simple beam test non-crystaline amorphous metal blank; With the planeness of three survey meter test non-crystaline amorphous metal blanks, with the roughness of roughness measuring instrument test non-crystaline amorphous metal blank, and the record take off data.
Comparative Examples 2
With composition is Zr
52Al
10Cu
30Ni
7The non-crystaline amorphous metal fusion, through die casting equipment its casting is mapped in the metal die, obtain being of a size of the non-crystaline amorphous metal blank of 0.6mm * 10mm * 60mm.
With median size is the shot particle adding automatic sand-blasting machine of 0.2mm, under the 0.5MPa condition, the non-crystaline amorphous metal blank is inject process 20s, obtains to spray sample.
After all samples sprays and accomplishes in above embodiment and the Comparative Examples; All adopt omnipotent mechanics tensile testing machine to carry out the anti-bending strength test to spraying sample, span is 50mm, and loading rate is 2mm/Min; The impelling strength that adopts the test of non-notch simple beam to spray sample; Planeness with sample is sprayed in three survey meter tests with the roughness of roughness measuring instrument test injection sample, and writes down take off data.
The sample and the test gained data of the foregoing description and Comparative Examples are added up, and statistics is seen table 1.
And, the stress-strain(ed) curve data of the embodiment 1 and the sample of Comparative Examples 1, Comparative Examples 2 are plotted in Fig. 1.
Can find out that from table 1 impelling strength of not surface treated non-crystaline amorphous metal workpiece blank has only 60KJ/m in the Comparative Examples 1
2Though the injection sample of the conventional shot peening of process has improved the impelling strength of workpiece significantly in the Comparative Examples 2, to spray the sample plane degree and increase to 2mm from 0.05mm, tangible distortion has appearred; And roughness also increases to 2um from 1.6um, and it is more coarse that the surface becomes.Hence one can see that; Injection sample according to the embodiment 1 to 5 of process for treating surface scheme of the present invention; Not only impelling strength has obtained significant raising; Shown and Comparative Examples 1 and the better surfaceness of Comparative Examples 2 workpiece, and considerable change do not take place in planeness, promptly do not occur bending and deformation.
As can beappreciated from fig. 1, not surface treated non-crystaline amorphous metal blank, promptly the sample shown in the Comparative Examples 1 though have the highest breaking tenacity, shows typical brittle failure fracture mode; Adopt traditional shot-blast process (sample shown in the Comparative Examples 2) and spray technology of the present invention (shown in the embodiment 1) then all to improve the viscous deformation of non-crystaline amorphous metal workpiece significantly; The non-crystaline amorphous metal workpiece has all shown typical surrender; And shown tangible viscous deformation; Thereby improved non-crystaline amorphous metal workpiece security and safety in use, the inefficacy that can effectively avoid the brittle failure in use of non-crystaline amorphous metal workpiece to cause.
In sum; The present invention has not only improved the plastic deformation ability and the impelling strength of non-crystaline amorphous metal; And improved the roughness of non-crystaline amorphous metal, do not cause the distortion of workpiece simultaneously, thereby provide possible for the application of non-crystaline amorphous metal in the higher workpiece of precision workpiece and appearance requirement.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (13)
1. a non-crystaline amorphous metal process of surface treatment is characterized in that, comprising: utilize metallic particles and non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface.
2. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, said metallic particles be in shot, shot, steel sand, the iron sand one or more.
3. non-crystaline amorphous metal process of surface treatment as claimed in claim 2 is characterized in that the mean diameter of said metallic particles is between 0.05mm and 1mm.
4. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, said non-metallic particle is the ball material or in the sand material one or more of pottery, glass.
5. like each described non-crystaline amorphous metal process of surface treatment in the claim 4, it is characterized in that the mean diameter of said non-metallic particle is between 0.05mm and 0.25mm.
6. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that the volume ratio of said metallic particles and said non-metallic particle is between 1: 5～1: 20.
7. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, the time of said inject process is between 10 seconds～60 seconds.
8. like claim 1 or 7 described non-crystaline amorphous metal process of surface treatment, it is characterized in that the pressure of said inject process is between 0.2MPa-1MPa.
9. non-crystaline amorphous metal process of surface treatment as claimed in claim 1; It is characterized in that; Said inject process comprises utilizes said metallic particles that inject process is carried out on the non-crystaline amorphous metal surface earlier, utilizes said non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface then.
10. non-crystaline amorphous metal process of surface treatment as claimed in claim 1; It is characterized in that; Said inject process comprises utilizes said non-metallic particle that inject process is carried out on the non-crystaline amorphous metal surface earlier, utilizes said metallic particles that inject process is carried out on the non-crystaline amorphous metal surface then.
11. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, said inject process is that the composite grain that utilizes said non-metallic particle and said metallic particles to constitute carries out inject process to the non-crystaline amorphous metal surface.
12. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, said inject process is for utilizing said non-metallic particle respectively and utilizing said metallic particles simultaneously inject process to be carried out on the non-crystaline amorphous metal surface.
13. non-crystaline amorphous metal process of surface treatment as claimed in claim 1 is characterized in that, said inject process comprises to be utilized said non-metallic particle and utilizes said metallic particles alternately the non-crystaline amorphous metal surface to be sprayed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015085896A1 (en) * | 2013-12-13 | 2015-06-18 | 郭斐 | Machining process for iron sand particle modification, iron sand particles and grinding panel of crusher |
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Application publication date: 20120502 |