Influence of Conventional Shot Peening and Micro-Particle Peening Processes on the Surface Properties of 42CrMo Steel

HUANG Huaiyu, ZHANG Fulin, WANG Guanghong, LI Xinshuo, QIAN Qinlang, ZOU Wei, CAO Yufan, LIU Qi, CHEN Yongzhen, CHENG Zhen

doi:10.16577/j.issn.1001-1560.2024.0254

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Materials Protection >

2024 , Vol. 57 >Issue 11: 101 - 109

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0254

Influence of Conventional Shot Peening and Micro-Particle Peening Processes on the Surface Properties of 42CrMo Steel

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(1.School of Mechatronic Engineering，Jiangsu Normal University，Xuzhou 221116，China；2.Jiangsu Normal University KeWen College，Xuzhou 221132，China；3.Tianjin Ten Elements Metal Products Co.，Ltd.，Tianjin 300357，China；4.CNBM Hefei Mechanical ＆ Electrical Engineering Technology Co.，Ltd.，Hefei 230051，China)

WANG Guanghong (1987－)，Senior Engineer，Ph.D.，Research Focus: Surface Strengthening and Friction Wear and Fatigue Characteristics of Mechanical Components，Development of Marine Equipment，Tel.: 13585395906，E-mail: guanghwang＠163.com；

ZOU Wei (1979－)，Lecturer，Ph.D.，Research Focus: Polymer Modification Technology and Performance，New Forming Technology and Equipment，Tel.: 15252089835，E-mail: zw55624＠163.com

Received date: 2024-07-08

Revised date: 2024-08-16

Accepted date: 2024-08-17

Online published: 2024-12-23

Supported by

Special Funding for Marine Economic Development of Guangdong Province ([2023]51)；Natural Science Foundation of Jiangsu Province (BK20220680)；Graduate Research and Postgraduate Research ＆ Practice Innovation Program of Jiangsu Province (KYCX24_3060)

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Abstract

To investigate the effects of conventional shot peening and micro-particle shot peening on the surface properties of 42CrMo steel，ABAQUS software was employed to identify the primary and secondary influencing factors of these two processes on material surface roughness and the depth of the residual stress layer through orthogonal experiments.Based on the analysis results of the orthogonal experiments，practical experiments were conducted for validation.Considering the characteristics of micro-particle shot peening and conventional shot peening，a single-factor study of the shot peening coverage rate was carried out to examine the impact of these two processes on the residual stress，surface roughness and equivalent plastic strain of 42CrMo steel.Results showed that under the same coverage rate condition，micro-particle shot peening yielded higher residual compressive stress，lower surface roughness and higher equivalent plastic strain compared to conventional shot peening，accompanied by a slightly shallower strengthening layer.The increase in residual compressive stress contributed to improving wear resistance and fatigue performance of the material，while the lower surface roughness contributed to restraining crack initiation.Higher equivalent plastic strain could further refine grains and promote the generation of residual compressive stress.These advantages suggested the broad prospects of micro-particle shot peening in the surface strengthening of mechanical components.

Key words： shot peening; 42CrMo steel; orthogonal experiment; residual stress; roughness

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HUANG Huaiyu, ZHANG Fulin, WANG Guanghong, LI Xinshuo, QIAN Qinlang, ZOU Wei, CAO Yufan, LIU Qi, CHEN Yongzhen, CHENG Zhen . Influence of Conventional Shot Peening and Micro-Particle Peening Processes on the Surface Properties of 42CrMo Steel[J]. Materials Protection, 2024 , 57(11) : 101 -109 . DOI: 10.16577/j.issn.1001-1560.2024.0254

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