15-5ph不锈钢在不同时效温度下的强化机理

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiali in tehnologije Pub Date : 2022-12-08 DOI:10.17222/mit.2022.535

Bei Li, Chunhui Jin, Guoqiang Li, Jinhua Zhao, Jin-shan Chen, Lifeng Ma

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引用次数: 0

摘要

本研究旨在阐明在440-610℃时效温度下Cr15Ni5沉淀硬化不锈钢(15-5PH不锈钢)强化机制的变化。采用透射电镜(TEM)和电子背散射衍射(EBSD)进一步表征了不同时效过程下拉伸性能的变化。结果表明:470 ~ 610℃不同时效温度下，晶粒细化强化、析出强化和位错强化对合金强度的贡献分别分布在296 ~ 345 MPa、0 ~ 469 MPa和97 ~ 803 MPa;沉淀强化和位错强化的不同组合所产生的强度增量是决定所研究的15-5PH不锈钢最终力学性能的关键。

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STRENGTHENING MECHANISM OF 15-5PH STAINLESS STEEL UNDER DIFFERENT AGING TEMPERATURES

The research described here was aimed at illuminating the variation in the strengthening mechanism of Cr15Ni5 precipitation hardening stainless steel (15-5PH stainless steel) processed at aging temperatures ranging from 440–610 °C. The variation in the tensile property corresponding to different aging processes was measured, and the microstructure features were further characterized using a transmission electron microscope (TEM) and electron back-scatter diffraction (EBSD). Results indicated that the strength contribution induced by grain-refinement strengthening, precipitation strengthening and dislocation strengthening corresponding to different aging temperatures varying from 470–610 °C were determined to be distributed in strength ranges of 296–345 MPa, 0–469 MPa and 97–803 MPa, respectively. The strength increments caused by different combinations of precipitation strengthening and dislocation strengthening were crucial for determining the final mechanical properties of the studied 15-5PH stainless steel.

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.