Effect of Shot Peening on High Cycle Fatigue Properties of High-strength Deformed Magnesium Alloy ZK60-T5
[1]LIU Wencai,DONG Jie,ZHAI Chunquan,et al.Effect of Shot Peening on High Cycle Fatigue Properties of High-strength Deformed Magnesium Alloy ZK60-T5[J].Journal of Zhengzhou University (Engineering Science),2009,30(01):1-5.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30
Number of periods:
2009 01
Page number:
1-5
Column:
Public date:
1900-01-01
- Title:
- Effect of Shot Peening on High Cycle Fatigue Properties of High-strength Deformed Magnesium Alloy ZK60-T5
- Keywords:
- magnesium alloy; ZK60; T5; shot peening; High cycle fatigue
- CLC:
- -
- DOI:
- -
- Abstract:
- In order to study the changes of the microstructure of the surface deformation layer of high-strength deformed magnesium alloy ZK60 after shot peening treatment and its effect on the high cycle fatigue performance, the round rod poured by semi-continuous casting was first hot extruded with an extrusion ratio of 14, and the extruded rod was processed into a funnel-type fatigue sample after T5 heat treatment, labeled ZK60-T5. The effects of surface roughness, microhardness and residual compressive stress of the deformation layer on the high cycle fatigue properties of ZK60-T5 magnesium alloy after shot peening treatment were studied. The results show that the optimal shot peening process of high-strength deformed magnesium alloy ZK60-T5 is 0.05 mmN, and after shot peening, the microstructure of the deformation layer on the surface of ZK60-T5 magnesium alloy changes, the fatigue strength increases from 150 MPa to 195 MPa, which is increased by 30%, and the fatigue life is significantly improved, while the fatigue crack source is "driven" from the surface to the surface reinforcement layer under the action of the residual compressive stress field of the surface deformation layer.
- References:
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Last Update:
1900-01-01