CN104561863A - Strain strengthening method for high-temperature surface of magnesium alloy - Google Patents
Strain strengthening method for high-temperature surface of magnesium alloy Download PDFInfo
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- 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
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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Abstract
The invention provides a strain strengthening method for a high-temperature surface of magnesium alloy. The strain strengthening method comprises the following steps: (1) heating a material storage tank until a shot blasting medium reaches a required temperature; (2) after pressurizing air to be required pressure intensity by virtue of an air compressor, supplying air into a high-pressure air heating device through a conveying pipeline to obtain high-temperature and high-pressure gas; (3) heating a magnesium alloy sample to the required temperature; (4) blowing the shot blasting medium by virtue of high-temperature and high-pressure gas to hit the surface of the magnesium alloy sample. According to the strain strengthening method, the shot blasting is carried out by virtue of high-temperature and high-pressure gas, and the heating temperature of the magnesium alloy sample is between magnesium alloy aging temperature and a temperature which is 50 DEG C higher than the aging temperature, so that a starting non-basal slip system of the magnesium alloy sample is met, the plasticity of the magnesium alloy can be improved, the deformability can be improved, a relative high residual compressive stress is achieved, the stability of the residual stress can be improved, and the fatigue performance of the magnesium alloy can be improved; furthermore, a proper shot blasting window can be broadened, and the experimental operation is easily achieved.
Description
Technical field
The invention belongs to technical field of magnesium alloy surface treatment, particularly relate to a kind of magnesium alloy high temperature surface deformation strengthening method.
Background technology
Repeated stress failure is the topmost form that mechanical component and engineering component destroy always.In the fields such as aerospace, shipbuilding, chemical machinery, communications and transportation, engineering machinery, about there is the structural strength of more than 50 ~ 90% to destroy and caused by fatigure failure.Magnesium alloy is as the very large metallic substance of a kind of development potentiality, and the improvement of fatigue property is conducive to expanding its Application Areas.The repeated stress failure of material, often from surface, upper layer or sub-surface, especially at stress concentration position, thus improves the supporting capacity at stress concentration position, and the upper layer of strengthening certain depth can significantly improve the fatigue strength of material and extend fatigue lifetime.The ultimate principle of surface deformation strengthening utilizes mechanical energy to make workpiece surface produce viscous deformation exactly, and surface obtains deformation and refined crystalline strengthening; In top layer, microstress increases; Simultaneously, the change of the surface size that surface plastic deformation brings, cause surface compress residual stresses, thus the total stress approach of shear strength making the power of crack propagation-additional tensile stress and residual compressive stress synthesize reduces, suppress or postpone nucleation and the expansion of fatigue cracking, greatly can improve the fatigue strength of material and extend fatigue lifetime.Surface deformation strengthening mainly contains three kinds of techniques such as shot-peening, roll extrusion and hole extruding.Wherein, compared with extruding with roll extrusion, hole, shot-blast process does not limit by material category, part geometry shape and size size, and cost is low, strengthening effect remarkable, is the surface deformation strengthening technique having industrial prospect most.Cloudburst treatment art principle is: the pressurized air utilizing the air compressor machine in air compression system to provide flow at high speed in spray gun forms the ejector action that negative pressure produces, blasting media in cyclonic separator is sucked in spray gun by blast tube, then sprayed by nozzle at high speeds with pressurized air, repeatedly impact specimen surface, realize the surface deformation strengthening to sample.
Smooth and notched fatigue performance ofaging treated and shot peened ZK60 magnesium alloy (the smooth and notch fatigue behavioral study of aging strengthening model and shot peening ZK60 alloy) that contriver etc. deliver on " Journal of Materials Research " (investigation of materials journal) the 25th volume the 6th phase 1375 – in 2010 1387 pages have studied the impact of room temperature cloudburst treatment art on extruding and ageing treatment state ZK60 magnesium alloy microstructures and high cycle fatigue performance, result shows, after room temperature shot peening, the fatigue property of ZK60 alloy is significantly improved, and aging strengthening model can improve the surface deformation strengthening effect of room temperature shot-peening further.But, different from aluminium alloy and iron and steel, magnesium alloy is Patterns for Close-Packed Hexagonal Crystal structure, under room temperature, magnesium alloy only has basal slip to occur, and only can provide 3 geometry slip systems and 2 independent slip-system, even if prismatic plane slippage occurs, the requirement of von Mises criterion still can not be met.Thus, magnesium alloy is at room temperature out of shape difficulty, plasticity and toughness are poor, and matrix hardness is low, surface is difficult to bear severe plastic deformation, though low strength shot-peening can improve fatigue property greatly, higher-strength shot-peening can cause surface imperfection and produce tiny crack, therefore the room temperature shot-peening effect of magnesium alloy is limited.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of magnesium alloy high temperature surface deformation strengthening method.
The present invention is achieved by the following technical solutions:
A kind of magnesium alloy high temperature surface deformation strengthening method, described method comprises the steps:
Step 1, heats storage tank, makes blasting media reach temperature required;
Step 2, with air compressor by after air pressurized to required pressure, enters high-pressure air heating unit through transport pipe, heats air, obtains 150 ~ 350 DEG C, pressure is the high temperature and high pressure gas of 0.2 ~ 1MPa;
Step 3, is heated to temperature required to magnesium alloy sample;
Step 4, impacts magnesium alloy sample on the surface with high temperature and high pressure gas ejection blasting media.
Preferably, in step 1, described temperature required be 150 DEG C ~ 350 DEG C.
Preferably, described temperature required be 250 DEG C.
Preferably, pressurized air described in step 2 reaches temperature needed in high-pressure air heating unit is 250 DEG C.
Preferably, in step 3, described temperature required be 150 DEG C ~ 300 DEG C.
Preferably, when described magnesium alloy sample is non-magnesium-rare earth, temperature required is 150 DEG C ~ 250 DEG C; When described magnesium alloy sample is magnesium-rare earth, temperature required is 200 DEG C ~ 300 DEG C.
Preferably, in step 4, the intensity of described high temperature and high pressure gas ejection blasting media is 0.05 ~ 0.50mmN.
Preferably, when described magnesium alloy sample is as-cast magnesium alloy, the intensity of described high temperature and high pressure gas ejection blasting media is 0.20 ~ 0.50mmN, and when described magnesium alloy sample is deformation states magnesium alloy, the intensity of described high temperature and high pressure gas ejection blasting media is 0.05 ~ 0.30mmN.
Preferably, described blasting media is diameter is 300 μm ~ 500 μm glass balls, cast steel ball or ceramic pellet.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention adopts high temperature and high pressure gas to carry out shot peening, can the heat taken away when flow at high speed of make-up gas constantly, guarantee the stability of temperature in whole shot-peening process, magnesium alloy sample Heating temperature is between magnesium alloy aging temp to aging temp+50 DEG C, meet magnesium alloy sample and start nonbasal slip system, be conducive to the raising of magnesium alloy plasticity, improve deformability, cause larger residual compressive stress;
2. the inventive method can strengthen the stability of unrelieved stress, improves the fatigue property of magnesium alloy further;
3. the present invention can widen suitable shot-peening window, is easy to experimental implementation.
4. the inventive method is simple, easily operates, Be very effective.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
The present embodiment relates to a kind of magnesium alloy high temperature surface deformation strengthening method, comprises the steps:
The present embodiment adopts As-extruded ZK60 (Mg-6Zn-0.5Zr) magnesium alloy.
Step one, utilizes conventional heating device to heat storage tank, makes blasting media reach 250 DEG C;
Step 2, with air compressor by after air pressurized to 1MPa, enter high-pressure air heating unit through transport pipe, the temperature of pressurized air in high-pressure air heating unit is 250 DEG C, and pressure is 0.6MPa;
Step 3, utilizes conventional heating device to be heated to 250 DEG C to ZK60 (Mg-6Zn-0.5Zr) magnesium alloy sample;
Step 4, utilizes High Temperature High Pressure air flow at high speed in spray gun to form the ejector action of negative pressure generation, and ejection diameter is that the high temp glass ball of 400 μm impacts ZK60 (Mg-6Zn-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.05mmN.
Implementation result: the surface deformation later performance of ZK60 (Mg-6Zn-0.5Zr) magnesium alloy sample after high temperature shot-peening is tested, wherein, maximum residual stress is 95MPa, and surface roughness Ra is about 1.2 μm, and deformation layer microhardness increase rate is 50HV0.05; 10 have been carried out to fatiguespecimen
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 200MPa from the 140MPa before high temperature shot-peening, improves 60MPa.
Traditional method: get As-extruded ZK60 (Mg-6Zn-0.5Zr) magnesium alloy, room temperature high-pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the room temperature glass ball of 400 μm impacts ZK60 (Mg-6Zn-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.05mmN.The surface deformation later performance of ZK60 (Mg-6Zn-0.5Zr) magnesium alloy sample after room temperature shot-peening is tested, wherein, maximum residual stress is 75MPa, and surface roughness Ra is about 1 μm, and deformation layer microhardness increase rate is 40HV0.05; 10 are carried out to the fatiguespecimen after room temperature shot-peening
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 180MPa from the 140MPa before room temperature shot-peening, improves 40MPa.
The surface deformation later performance of ZK60 (Mg-6Zn-0.5Zr) magnesium alloy and fatigue strength after high temperature shot-peening and room temperature shot peening, relatively traditional room temperature shot peening method, after high temperature shot-peening process of the present invention, larger residual compressive stress and microhardness can be produced, and the stability of unrelieved stress can be strengthened, further increase the shot-peening effect of ZK60 (Mg-6Zn-0.5Zr) magnesium alloy.
embodiment 2
The present embodiment relates to a kind of magnesium alloy high temperature surface deformation strengthening method, comprises the steps:
The present embodiment adopts as cast condition AZ91 (Mg-9Al-0.5Zn) magnesium alloy.
Step one, utilizes conventional heating device to heat storage tank, makes blasting media reach 200 DEG C;
Step 2, with air compressor by after air pressurized to 1MPa, enter high-pressure air heating unit through transport pipe, the temperature of pressurized air in high-pressure air heating unit is 200 DEG C, and pressure is 0.2MPa;
Step 3, utilizes conventional heating device to be heated to 200 DEG C to AZ91 (Mg-9Al-0.5Zn) magnesium alloy sample;
Step 4, utilizes High Temperature High Pressure air flow at high speed in spray gun to form the ejector action of negative pressure generation, and ejection diameter is that the high temp glass ball of 300 μm impacts AZ91 (Mg-9Al-0.5Zn) magnesium alloy sample on the surface, and shot peening strength is 0.50mmN.
Implementation result: the surface deformation later performance of AZ91 (Mg-9Al-0.5Zn) magnesium alloy sample after high temperature shot-peening is tested, wherein, maximum residual stress is 130MPa, and surface roughness Ra is about 4.5 μm, and deformation layer microhardness increase rate is 60HV0.05; 10 have been carried out to fatiguespecimen
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 105MPa from the 60MPa before high temperature shot-peening, improves 45MPa.
Traditional method: get as cast condition AZ91 (Mg-9Al-0.5Zn) magnesium alloy, room temperature high-pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the room temperature glass ball of 300 μm impacts AZ91 (Mg-9Al-0.5Zn) magnesium alloy sample on the surface, and shot peening strength is 0.50mmN.The surface deformation later performance of AZ91 (Mg-9Al-0.5Zn) magnesium alloy sample after room temperature shot-peening is tested, wherein, maximum residual stress is 100MPa, and surface roughness Ra is about 4 μm, and deformation layer microhardness increase rate is 45HV0.05; 10 are carried out to the fatiguespecimen after room temperature shot-peening
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 90MPa from the 60MPa before room temperature shot-peening, improves 30MPa.
The surface deformation later performance of AZ91 (Mg-9Al-0.5Zn) magnesium alloy and fatigue strength after high temperature shot-peening and room temperature shot peening, relatively traditional room temperature shot peening method, after high temperature shot-peening process of the present invention, larger residual compressive stress and microhardness can be produced, and the stability of unrelieved stress can be strengthened, further increase the shot-peening effect of AZ91 (Mg-9Al-0.5Zn) magnesium alloy.
embodiment 3
The present embodiment relates to a kind of magnesium alloy high temperature surface deformation strengthening method, comprises the steps:
The present embodiment adopts As-extruded GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy.
Step one, utilizes conventional heating device to heat storage tank, makes blasting media reach 300 DEG C;
Step 2, with air compressor by after air pressurized to 1MPa, enter high-pressure air heating unit through transport pipe, the temperature of pressurized air in high-pressure air heating unit is 300 DEG C, and pressure is 1MPa;
Step 3, utilizes conventional heating device to be heated to 300 DEG C to GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy sample;
Step 4, High Temperature High Pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the high temperature cast steel ball of 500 μm impacts GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.20mmN.
Implementation result: the surface deformation later performance of GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy sample after high temperature shot-peening is tested, wherein, maximum residual stress is 135MPa, and surface roughness Ra is about 1.8 μm, and deformation layer microhardness increase rate is 68HV0.05; 10 have been carried out to fatiguespecimen
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 230MPa from the 150MPa before high temperature shot-peening, improves 80MPa.
Traditional method: get As-extruded GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy, room temperature high-pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the room temperature cast steel ball of 500 μm impacts GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.20mmN.The surface deformation later performance of GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy sample after room temperature shot-peening is tested, wherein, maximum residual stress is 115MPa, and surface roughness Ra is about 1.5 μm, and deformation layer microhardness increase rate is 52HV0.05; 10 are carried out to the fatiguespecimen after room temperature shot-peening
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 215MPa from the 150MPa before room temperature shot-peening, improves 65MPa.
The surface deformation later performance of GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy and fatigue strength after high temperature shot-peening and room temperature shot peening, relatively traditional room temperature shot peening method, after high temperature shot-peening process of the present invention, larger residual compressive stress and microhardness can be produced, and the stability of unrelieved stress can be strengthened, further increase the shot-peening effect of GW103K (Mg-10Gd-3Y-0.5Zr) magnesium alloy.
embodiment 4
The present embodiment relates to a kind of magnesium alloy high temperature surface deformation strengthening method, comprises the steps:
The present embodiment adopts As-extruded AZ31 (Mg-3Al-1Zn) magnesium alloy.
Step one, utilizes conventional heating device to heat storage tank, makes blasting media reach 150 DEG C;
Step 2, with air compressor by after air pressurized to 1MPa, enter high-pressure air heating unit through transport pipe, the temperature of pressurized air in high-pressure air heating unit is 150 DEG C, and pressure is 0.4MPa;
Step 3, utilizes conventional heating device to be heated to 150 DEG C to AZ31 (Mg-3Al-1Zn) magnesium alloy sample;
Step 4, utilizes High Temperature High Pressure air flow at high speed in spray gun to form the ejector action of negative pressure generation, and ejection diameter is that the high temperature cast steel ball of 300 μm impacts AZ31 (Mg-3Al-1Zn) magnesium alloy sample on the surface, and shot peening strength is 0.10mmN.
Implementation result: the surface deformation later performance of AZ31 (Mg-3Al-1Zn) magnesium alloy sample after high temperature shot-peening is tested, wherein, maximum residual stress is 97MPa, and surface roughness Ra is about 1.1 μm, and deformation layer microhardness increase rate is 55HV0.05; 10 have been carried out to fatiguespecimen
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 155MPa from the 100MPa before high temperature shot-peening, improves 55MPa.
Traditional method: get As-extruded AZ31 (Mg-3Al-1Zn) magnesium alloy, room temperature high-pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the room temperature cast steel ball of 300 μm impacts AZ31 (Mg-3Al-1Zn) magnesium alloy sample on the surface, and shot peening strength is 0.10mmN.Test the surface deformation later performance of AZ31 (Mg-3Al-1Zn) magnesium alloy sample after room temperature shot-peening, wherein, maximum residual stress is 75MPa, and surface roughness Ra is about 1 μm, and deformation layer microhardness increase rate is 40HV0.05; 10 are carried out to the fatiguespecimen after room temperature shot-peening
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 140MPa from the 100MPa before room temperature shot-peening, improves 40MPa.
The surface deformation later performance of AZ31 (Mg-3Al-1Zn) magnesium alloy and fatigue strength after high temperature shot-peening and room temperature shot peening, relatively traditional room temperature shot peening method, after high temperature shot-peening process of the present invention, larger residual compressive stress and microhardness can be produced, and the stability of unrelieved stress can be strengthened, further increase the shot-peening effect of AZ31 (Mg-3Al-1Zn) magnesium alloy.
embodiment 5
The present embodiment relates to a kind of magnesium alloy high temperature surface deformation strengthening method, comprises the steps:
The present embodiment adopts As-extruded GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy.
Step one, utilizes conventional heating device to heat storage tank, makes blasting media reach 350 DEG C;
Step 2, with air compressor by after air pressurized to 1MPa, enter high-pressure air heating unit through transport pipe, the temperature of pressurized air in high-pressure air heating unit is 350 DEG C, and pressure is 0.8MPa;
Step 3, utilizes conventional heating device to be heated to 350 DEG C to GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy sample;
Step 4, High Temperature High Pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the pyroceramic ball of 500 μm impacts GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.25mmN.
Implementation result: the surface deformation later performance of GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy sample after high temperature shot-peening is tested, wherein, maximum residual stress is 140MPa, and surface roughness Ra is about 1.6 μm, and deformation layer microhardness increase rate is 72HV0.05; 10 have been carried out to fatiguespecimen
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 240MPa from the 155MPa before high temperature shot-peening, improves 85MPa.
Traditional method: get As-extruded GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy, room temperature high-pressure air flow at high speed in spray gun is utilized to form the ejector action of negative pressure generation, ejection diameter is that the room temperature ceramic pellet of 500 μm impacts GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy sample on the surface, and shot peening strength is 0.25mmN.The surface deformation later performance of GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy sample after room temperature shot-peening is tested, wherein, maximum residual stress is 118MPa, and surface roughness Ra is about 1.4 μm, and deformation layer microhardness increase rate is 56HV0.05; 10 are carried out to the fatiguespecimen after room temperature shot-peening
7secondary fatigue strength test, they are 10 years old
7secondary fatigue strength brings up to 225MPa from the 155MPa before room temperature shot-peening, improves 70MPa.
The surface deformation later performance of GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy and fatigue strength after high temperature shot-peening and room temperature shot peening, relatively traditional room temperature shot peening method, after high temperature shot-peening process of the present invention, larger residual compressive stress and microhardness can be produced, and the stability of unrelieved stress can be strengthened, further increase the shot-peening effect of GW123K (Mg-12Gd-3Y-0.5Zr) magnesium alloy.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a magnesium alloy high temperature surface deformation strengthening method, is characterized in that, described method comprises the steps:
Step 1, heats storage tank, makes blasting media reach temperature required;
Step 2, with air compressor by after air pressurized to required pressure, enters high-pressure air heating unit through transport pipe, heats air, obtains 150 ~ 350 DEG C, pressure is the high temperature and high pressure gas of 0.2 ~ 1MPa;
Step 3, is heated to temperature required to magnesium alloy sample;
Step 4, impacts magnesium alloy sample on the surface with high temperature and high pressure gas ejection blasting media.
2. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, is characterized in that, in step 1, described temperature required be 150 DEG C ~ 350 DEG C.
3. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 2, is characterized in that, described temperature required be 250 DEG C.
4. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, it is characterized in that, the temperature that pressurized air described in step 2 reaches needed in high-pressure air heating unit is 250 DEG C.
5. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, is characterized in that, in step 3, described temperature required be 150 DEG C ~ 300 DEG C.
6. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, it is characterized in that, when described magnesium alloy sample is non-magnesium-rare earth, step 3 is temperature required is 150 DEG C ~ 250 DEG C; When described magnesium alloy sample is magnesium-rare earth, temperature required is 200 DEG C ~ 300 DEG C.
7. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, is characterized in that, in step 4, the intensity of described high temperature and high pressure gas ejection blasting media is 0.05 ~ 0.50mmN.
8. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 7, is characterized in that, when described magnesium alloy sample is as-cast magnesium alloy, the intensity of described high temperature and high pressure gas ejection blasting media is 0.20 ~ 0.50mmN; When described magnesium alloy sample is deformation states magnesium alloy, the intensity of described high temperature and high pressure gas ejection blasting media is 0.05 ~ 0.30mmN.
9. magnesium alloy high temperature surface deformation strengthening method as claimed in claim 1, it is characterized in that, described blasting media is diameter is 300 μm ~ 500 μm glass balls, cast steel ball or ceramic pellet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411314A (en) * | 2020-05-15 | 2020-07-14 | 重庆工商大学 | Method for improving fatigue property of magnesium alloy |
| CN114107857A (en) * | 2021-11-30 | 2022-03-01 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
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| JP2006281343A (en) * | 2005-03-31 | 2006-10-19 | Jfe Steel Kk | Warm shot peening method for thick steel plate |
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| JP2006281343A (en) * | 2005-03-31 | 2006-10-19 | Jfe Steel Kk | Warm shot peening method for thick steel plate |
| CN102980790A (en) * | 2012-11-30 | 2013-03-20 | 上海交通大学 | Test device and method for high-temperature shot blasting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111411314A (en) * | 2020-05-15 | 2020-07-14 | 重庆工商大学 | Method for improving fatigue property of magnesium alloy |
| CN114107857A (en) * | 2021-11-30 | 2022-03-01 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
| CN114107857B (en) * | 2021-11-30 | 2022-04-26 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
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Application publication date: 20150429 |