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核聚变与等离子体物理 ›› 2017, Vol. 37 ›› Issue (3): 302-307.DOI: 10.16568/j.0254-6086.201703010

• 核聚变工程技术 • 上一篇    下一篇

ITER第一壁模块Be/Cu连接失效分析

刘丹华,王平怀,李 前,杨 波,金凡亚,谌继明*,ITER屏蔽包层组   

  1. (核工业西南物理研究院,成都 610041)
  • 收稿日期:2016-09-09 修回日期:2017-03-28 出版日期:2017-09-15 发布日期:2017-09-14
  • 作者简介:刘丹华(1983-),女,四川达州人,副研究员,硕士研究生,从事聚变堆材料研究。
  • 基金资助:

    四川省青年科技创新团队专项 (2016TD0015)

Failure analysis of Be/Cu joint in ITER first wall mock-ups

LIU Dan-hua, WANG Ping-huai, LI Qian, YANG Bo, JIN Fan-ya, CHEN Ji-ming, ITER Ping-Bi-Bao-Ceng-Zu   

  1. (Southwestern Institute of Physics, Chengdu 610041)
  • Received:2016-09-09 Revised:2017-03-28 Online:2017-09-15 Published:2017-09-14

摘要:

为了分析ITER第一壁模块试制过程中Be/Cu界面经热等静压扩散连接后出现的不可接受的大尺寸缺陷,对Be/Cu连接失效的模块进行了破坏性试验。首先采用线切割对模块进行解剖,并对连接界面缺陷区域及非缺陷区域通过金相观察、SEM观察及能谱分析进行对比,初步确定了界面连接的失效机理。

关键词: ITER, 第一壁, CuCrZr合金, Be/Cu连接, 热等静压, 爆炸焊

Abstract:

ITER first wall mock-ups were fabricated by joining CuCrZr and 316L(N) stainless steel with explosion welding, machining cooling channel, and then bonding Be tiles on CuCrZr interface with a hot isostatic pressing (HIP) technology, but a few large scale defects on the Be/Cu joint interface were observed by ultrasonic testing. In order to guarantee the mock-up quality, destructive tests were performed on these failed mock-ups. Samples were observed with optical microscope and SEM, and the possible cause of the defects formation was identified preliminarily.

Key words: ITER, First wall, CuCrZr alloy, Be/Cu joint, Hot isostatic pressing, Explosion welding

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