N50铠甲不同测试温度的力学性能研究  

Mechanical properties of N50 jacket at different test temperatures

作　　者：赵川漪 王维俊 金环 秦经刚[2] 周超[2] 徐斌[3] 涂正平 沈成飞 王坤 Zhao Chuanyi;Wang Weijun;Jin Huan;Qin Jinggang;Zhou Chao;Xu Bin;Tu Zhengping;Shen Chengfei;Wang Kun(Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;The Institute of metal research,Chinese Academy of Sciences,Shenyang 110016,China;The ZhejiangJiuli Hi-Tech Metals Company Ltd.,Huzhou 313012,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,合肥230601 [2]中国科学院合肥物质科学研究院,合肥230031 [3]中国科学院金属研究所,沈阳110016 [4]浙江久立特材科技股份有限公司,湖州313028

出　　处：《低温与超导》2022年第8期89-92,共4页Cryogenics and Superconductivity

基　　金：中国科学院重点项目(ZDRW-CN-2021-2-4)资助。

摘　　要：基于改进后的N50奥氏体不锈钢制备了一批圆形铠装电缆导体(CICC)铠甲,并对其在不同温度下进行力学性能测试,着重研究了测试温度对其性能及微观组织的影响。结果表明,在4.2 K温度下N50钢的抗拉强度可达1 800 MPa以上,断裂延伸率可达25%,明显高于316LN的力学性能水平。此外,受N元素相对含量较高的影响,N50在低温下呈现准解理断裂。初步验证了N50在作为CICC铠甲材料方面的应用可行性。A batch of round cable in conduit conductor(CICC) jacket was prepared based on the modified N50 austenitic stainless steel,and its mechanical properties were tested at different temperatures,focusing on the influence of the test temperature on its properties and microstructure.The results show that the tensile strength of N50 steel at 4.2 K is over 1800 MPa and the elongation at fracture is 25%,which is significantly higher than that of 316 LN steel.In addition,influenced by the high content of N element,N50 steel exhibits quasi-cleavage fracture at cryogenic temperature.The application prospect of N50 as CICC jacket material is preliminarily verified.

关 键 词：低温 N50 CICC导体铠甲 力学性能 

分 类 号：TL62[核科学技术—核技术及应用]