Influence of Strain Induced Martensite Formation of Austenitic Stainless Steel on Wear Properties

• Published in: Metals and materials international Vol. 25; no. 3; pp. 705 - 712
• Main Authors: Lee, Yoon-Seok, Ishikawa, Kazuki, Okayasu, Mitsuhiro
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Institute of Metals and Materials 01.05.2019; Springer Nature B.V; 대한금속·재료학회
• Subjects: Austenitic stainless steels; Characterization and Evaluation of Materials; Chemistry and Materials Science; Engineering Thermodynamics; Heat and Mass Transfer; Heat treating; Machines; Magnetic Materials; Magnetism; Manufacturing; Martensite; Martensitic transformations; Materials Science; Metallic Materials; Nucleation; Phase transitions; Processes; Rotation; Solid Mechanics; Stacking fault energy; Wear; 재료공학; AISI316; Martensitic transformation; AISI304; Reverse transformation; Wear; Austenite
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-018-00229-4

In this study, the wear characteristics and behaviors of both AISI304 and AISI316 austenitic stainless steels were evaluated under the different rotation speeds, using block-on-ring wear testing machine. From the microstructure analysis, at the first, the transition of strain induced-martensite was observed in wear-affected region of both AISI304 and AISI316. It is considered that the interfacial friction stress between test block and ring may trigger the phase transformation of meta-stable γ-fcc to ε/α′ martensite. Moreover, it is also observed that the amount of martensite increases with increasing rotation speed for both AISI304 and AISI316. The thickness of transformed martensite was deeper in AISI304, compared to AISI316 at all rotation speed. It can be explained by that the existence of molybdenum in AISI316 increases stacking fault energy, which can retard nucleation and growth of strain induced-martensite. Furthermore, reverse transformation was also detected at subsurface layer of both AISI304 and AISI316.