高纯钨在瞬态热冲击下的损伤行为研究

核聚变与等离子体物理 ›› 2014, Vol. 34 ›› Issue (1): 53-56.

高纯钨在瞬态热冲击下的损伤行为研究

陈蕾，刘翔，练友运

(核工业西南物理研究院，成都610041)

出版日期:2014-03-15 发布日期:2014-03-14
作者简介:陈蕾(1988-)，女，安徽安庆人，硕士研究生，主要从事面对等离子体材料研究
基金资助:
国家自然科学基金资助项目(11205049)

Preliminary study on transient thermal shock behavior of high purity tungsten

CHEN Lei, LIU Xiang, LIAN You-yun

(Southwestern Institute of Physics, Chengdu 610041)

Online:2014-03-15 Published:2014-03-14

摘要/Abstract

摘要：

通过电子束辐照实验和有限元模拟研究了ITER类型面对等离子体的高纯钨材料在瞬态热冲击下的行为。在新建成的电子束实验平台EMS-60上进行了ITER等离子体发生大破裂不稳定下的模拟实验，实验中样品的基体温度为室温，脉冲宽度为1∼5ms，能量负载范围是1~5MJ•m⁻²。实验后通过扫描电镜观察了样品的再结晶、裂纹及熔化情况，讨论了裂纹形成机理。通过有限元模拟，得出在5ms的脉冲负载下钨的裂纹阈值为1.5MJ•m⁻²，与实验结果符合很好。

关键词: 瞬态热冲击, 有限元模拟, 裂纹阈值

Abstract:

The thermal shock performances of ITER-like high purity tungsten were examined by an electron beam heat load test and finite element code simulation. Experiments under ITER-like plasma major disruption instability happening condition with test sample background temperature at room temperature were simulated by an electron beam facility EMS-60 newly constructed. Recrystallization, cracking and melting behaviors of test sample after irradiation tests were observed by a scanning electron microscopy (SEM) and their formation mechanisms have been discussed. Finite element simulation has been carried out by ANSYS code and the result shows that the cracking threshold of ITER grade tungsten is about 1.5M•Jm ^-2 for 5ms pulse loading, which is in accordance with experimental results.

Key words: Transient thermal shock, Finite element modeling, Cracking threshold

中图分类号:

TL62 + 7

陈蕾，刘翔，练友运. 高纯钨在瞬态热冲击下的损伤行为研究[J]. 核聚变与等离子体物理, 2014, 34(1): 53-56.

CHEN Lei, LIU Xiang, LIAN You-yun. Preliminary study on transient thermal shock behavior of high purity tungsten[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2014, 34(1): 53-56.

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