激光冲击强化丸对300M钢组织和力学性能的影响

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-04-04 DOI:10.1080/02670836.2023.2196472

Y. Xiong, T. Zhou, Zhenghua Chen, Yongsheng Wu, Xiao-qin Zha, Yong Li, Shubo Wang, Harishchandra Singh, M. Huttula, W. Cao

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引用次数: 2

摘要

为了提高300M钢的性能、使用寿命和相关工件的安全性，采用激光冲击法制备了表面梯度结构。为了优化LSP工艺，研究了LSP圆对合金组织和力学性能的影响。通过LSP观察到表面光滑、纳米化、梯度结构、硬度、残余压应力。一轮LSP引起的表面变化显著提高了300M钢的强度和塑性。然而，过量的LSP循环会导致表面粗糙度和力学性能下降，尽管表面纳米晶化、硬化区深度和压缩残余应力增加。

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Laser shock peening rounds influencing microstructural and mechanical properties of 300M steel

Laser shock peeing (LSP) was introduced to produce surface gradient structures on 300M steel to improve its performance, service life and related workpiece safety. The influences of LSP rounds on microstructural and mechanical properties were investigated to optimise the LSP processing. Smoother surface, surface nanocystallization, and gradient structure, hardness, compressive residue stress was observed LSP. Strength and plasticity of 300M steel improved significantly due to the surface changes induced by one round of LSP. However, excessive LSP rounds tend to deteriorate the surface roughness and mechanical properties despite increased surface nanocrystallization, hardening zone depth and compressive residual stress.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.