喷丸覆盖率对800 合金传热管残余应力和抗应力腐蚀开裂性能的影响

doi:10.3969/j.issn.1007-2861.2014.04.020

上海大学学报(自然科学版) ›› 2015, Vol. 21 ›› Issue (2): 170-176.doi: 10.3969/j.issn.1007-2861.2014.04.020

喷丸覆盖率对800 合金传热管残余应力和抗应力腐蚀开裂性能的影响

蔡志刚1, 王永东2, 苏诚1, 曹萍1

(1. 浙江久立特材科技股份有限公司, 浙江湖州313000;2. 上海核工程研究设计院, 上海200233)

收稿日期:2015-01-20 出版日期:2015-04-29 发布日期:2015-04-29
通讯作者: 蔡志刚(1978—), 男, 工程师, 研究方向为特种合金管材. E-mail:caicsu@126.com
基金资助:
浙江省重大科技专项资助项目(2012C01006)

Effects of different cover rate of shop peening on residual stress and stress corrosion cracking of 800 alloy tube

CAI Zhi-gang1, WANG Yong-dong2, SU Cheng1, CAO Ping1

(1. Zhejiang Jiuli Hi-Tech Metals Co. Ltd., Huzhou 313000, Zhejiang, China;2. Shanghai Nuclear Engineering Research and Design Institute, Shanghai 200233, China)

Received:2015-01-20 Online:2015-04-29 Published:2015-04-29

摘要/Abstract

摘要： 采用自主设计的喷丸机对核电蒸汽发生器用800 合金传热管进行了外表面喷丸处理.研究了不同喷丸覆盖率对核电蒸汽发生器用800 合金传热管的表面形貌、残余应力及其在10% NaOH 溶液高温高压环境下的抗应力腐蚀开裂(stress corrosion cracking, SCC)性能的影响. 结果表明, 喷丸处理能显著改变800 合金传热管的表面形貌和应力状态, 且随着喷丸覆盖率的增大, 800 合金传热管中的残余应力减少, 抗应力腐蚀性能显著改善.

关键词: 800合金传热管, 残余应力, 喷丸覆盖率, 应力腐蚀

Abstract: Shot peening is conducted on the outside surface of an 800 alloy heat-exchanging tube in a nuclear steam generator using a shot-peening machine. The effects on the 800 alloy tube surface micrograph, residual stress and stress corrosion cracking (SCC) in the 10%NaOH solution at high temperature and high pressure have been studied. The result shows that the shot peening can change the surface micrograph and residual stress of the 800 alloy tube. As the cover rate of shot peening is creases, the residual stress of the 800 alloy tube gradually decreases, and SCC resistance is significantly improved.

Key words: 800 alloy heat-exchanging tube, cover rate of shot peening, residual stress;stress corrosion cracking (SCC)

中图分类号:

TG 306

蔡志刚1, 王永东2, 苏诚1, 曹萍1. 喷丸覆盖率对800 合金传热管残余应力和抗应力腐蚀开裂性能的影响[J]. 上海大学学报(自然科学版), 2015, 21(2): 170-176.

CAI Zhi-gang1, WANG Yong-dong2, SU Cheng1, CAO Ping1. Effects of different cover rate of shop peening on residual stress and stress corrosion cracking of 800 alloy tube[J]. Journal of Shanghai University（Natural Science Edition）, 2015, 21(2): 170-176.

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喷丸覆盖率对800 合金传热管残余应力和抗应力腐蚀开裂性能的影响

Effects of different cover rate of shop peening on residual stress and stress corrosion cracking of 800 alloy tube

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