元琳琳,韩静涛,刘靖,刘岩龙

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用真空熔炼技术制备不同含钛量的高硼不锈钢芯料,并通过包覆浇注和热轧成型方法制备出热中子屏蔽用高硼不锈钢复合板。本研究利用热轧过程中产生的大变形得到良好的结合界面,且在热轧作用下复合板芯层中的粗大硼化物也得到改善。经过1100℃下不同时间的固溶处理,结合界面附近形成一定浓度梯度的硼原子分布。结果表明,对于芯层含硼量约为2.25%的不锈钢复合板,添加钛含量为5.7%,1100℃固溶处理4 h时得到的综合力学性能最佳,拉伸强度,屈服强度和伸长率分别为526.88 MPa,219.36 MPa以及29%,达到ASTM A887-89中304B7的标准。

关键词(KeyWords)： 中子屏蔽;热轧成型;固溶处理;高硼不锈钢;钛

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 元琳琳,韩静涛,刘靖,刘岩龙

DOI: 10.13289/j.issn.1009-6264.2015.08.019

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