English: Microstructure of austenitic stainless steel 304L. (a) 304L un-prestrained; (b) 304L prestrained to 10% at 20 °C; (c,d) 304L prestrained to 30% at 20 °C. The structure of (a) is mostly composed of austenite (γ). Martensite (α′) exists in (b) and (c), as they are supposed to the pre-strain.
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原典
Yanfei Wang, Xuanpei Wu, and Weijie Wu (2018). "Effect of α′ Martensite Content Induced by Tensile Plastic Prestrain on Hydrogen Transport and Hydrogen Embrittlement of 304L Austenitic Stainless Steel". Metals8 (9). MDPI AG. DOI:10.3390/met8090660. ISSN2075-4701. Retrieved on 2019-10-20. Fig. 3a,b,c. The arrangement of images was changed by the uploader.