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VACUUM ›› 2019, Vol. 56 ›› Issue (4): 49-52.doi: 10.13385/j.cnki.vacuum.2019.04.12

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Study on Vacuum Heat Treatment Distortions of Martensite Precipitation Hardening Stainless Steel

WANG Bo1, ZHANG Zhong-he1, WANG Fei-yu1, WANG Shuai1, YAN Shuai1, CUI Tian-long1, ZHANG Zhong-xin2   

  1. 1.Shenyang Blower Works Group Corporation, Shenyang 110869, China;
    2.Shenyang Innovation popularize Technology Co., Ltd., Shenyang 110141, China
  • Received:2018-08-20 Published:2019-08-22

Abstract: The C-shaped distorted specimens of martensitic precipitation hardening stainless steel were used to carry out the heat treatment distortion study by vacuum heat treatment and gas shielded furnace heat treatment. The metallographic microscope and SEM were used to analyze the microstructure of specimens with different deformation. The results show that the distortion of martensitic precipitation hardening stainless steel by vacuum adjustment and aging is less than that by gas shielded furnace adjustment and aging.The distortion of the specimens in the upper part of the vacuum furnace is larger than that in the lower part, but the anti-distortion performance is very good. The distortion of solution treatment process is greater than that of the adjustment. Deformation of specimens with different structural sizes varies greatly, which is very helpful for improving the test accuracy. The result of this study is instructive to control distortion of vacuum heat treatment.

Key words: Vacuum heat treatment, Distortion, Martensite precipitation hardening stainless steel

CLC Number: 

  • TG156.95
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