Cracking and grain refining behaviors of tungsten based plasma facing materials under fusion relevant transient heat flux
Cracking and grain refining behaviors of tungsten based plasma facing materials under fusion relevant transient heat flux
复制标题
钨基等离子体表面材料在聚变相关瞬态热通量下的裂纹和晶粒细化行为
DOI：
10.1016/j.fusengdes.2017.04.113
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发表时间：
2017
影响因子：
1.7
通讯作者：
Chen Junling
中科院分区：
文献类型：
--
作者：
Li Xiangbin;Zhu Dahuan;Li Changjun;Chen Junling
为了研究钨基等离子体表面材料在熔合相关瞬态热流下的行为，在EMS-60实验设备上，以0 ~ 800 MW/m2的单脉冲持续时间为5 ms，分别对经轧制和不经轧制的两种商品钨材料进行了测试。观察到的宏观和微观裂纹与预期的一致，并用有限元法对残余应力分布进行了分析，并对其分布规律进行了描述和解释。当高热通量超过600 MW/m2（~ 5 ms）时，晶粒细化不仅发生在中心区域，还发生在微裂纹周围。
To investigate the behaviors of tungsten based plasma facing materials under fusion relevant transient heat flux, two kinds of commercial tungsten materials processed with and without rolling respectively, have been tested on the EMS-60 facility using 0–800 MW/m2with single pulse duration of 5 ms. The macro and micro cracks were observed as expected, whose distribution patterns were depicted and explained by the residual stress distribution analysis with the finite element method. Moreover, when high heat flux exceeded 600 MW/m2(∼5 ms), the refining of grain crystal occurred not only at the central area but also around the micro cracks.