Effect of Post-Manufacturing Heat Treatment on Wear Performance of Laser Powder Bed Fusion 316L Stainless Steel Under Various Normal Loads

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2024-11-19 DOI:10.1007/s12540-024-01840-4

Junjie Chen, Hao Liu, Xinhe Xu, Zhanpeng Lu, Tongming Cui, Yandong Jia, Zaiqing Que

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Abstract

The friction and wear behavior of laser powder bed fusion (L-PBF) 316L stainless steels (SSs) with different post-manufacturing heat treatments (PMHTs) under various normal loads were investigated and compared with conventional wrought 316L SS. The dominant wear mechanism was adhesive wear for L-PBF 316L SS with as-built and stress relief PMHT conditions, but abrasive wear for wrought 316L SS. L-PBF 316L SS with solution annealing PMHT exhibited both adhesive and abrasive wear mechanisms. As built L-PBF 316L SS presented superior or close wear resistance to wrought 316L SS under low and medium normal loads, but the opposite under a high normal load. PMHTs gradually lowered compressive stress levels and decreased dislocation density in L-PBF 316L SS, inducing the degraded wear resistance of L-PBF 316L SS, which was more significant at a high normal load. The differentiated wear performance, i.e., better or worse wear resistances, among wrought and L-PBF 316L SSs not only depends on the applied normal loads during the wear test but is also controlled by the intrinsic microstructural features of materials and exhibited wear mechanisms.

Graphical Abstract

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加工后热处理对316L不锈钢激光粉末床熔合在不同载荷下磨损性能的影响

研究了激光粉末床熔合（L-PBF） 316L不锈钢在各种正常载荷下的摩擦磨损行为，并与传统锻造316L不锈钢进行了比较，结果表明：锻造和去应力PMHT条件下，L-PBF 316L不锈钢的主要磨损机制为黏着磨损，而锻造316L不锈钢的主要磨损机制为磨粒磨损。溶液退火PMHT条件下，L-PBF 316L不锈钢既有黏着磨损机制，也有磨粒磨损机制。L-PBF 316L SS在低和中等正常载荷下表现出优于或接近锻造316L SS的耐磨性，但在高正常载荷下则相反。pmht逐渐降低L-PBF 316L SS的压应力水平和位错密度，导致L-PBF 316L SS的耐磨性下降，且在高正常载荷下更为明显。变形和L-PBF 316L SSs的不同磨损性能（即耐磨性的好坏）不仅取决于磨损试验中施加的法向载荷，而且受材料固有的微观组织特征和所表现出的磨损机制的控制。图形抽象

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.