贝氏体钢氢脆敏感性研究  

The research on sensibility of hydrogen embrittlement for bainitic steel

作　　者：任伟伟 Ren Weiwei(Zhongtie Baoqiao Group Company Limited,Baoji Shaanxi 721006,China)

机构地区：[1]中铁宝桥集团有限公司,陕西宝鸡721006

出　　处：《山西建筑》2023年第16期115-117,183,共4页Shanxi Architecture

摘　　要：探究一种铁路辙叉用贝氏体合金钢热处理后的氢脆敏感性,实验采用电化学充氢的方法控制贝氏体合金钢材料中氢含量,采用慢速拉伸试验评定材料的氢脆敏感性,结果表明该材料的临界氢含量(质量分数)为0.00013%,正火工艺可以降低该材料氢含量(质量分数)0.00002%~0.00003%,为铁路辙叉贝氏体钢材料控制氢含量指标及方法提供了依据。The paper researches the railway steel frog’s sensibility of hydrogen embrittlement after the heat treatment of bainitic steel,adopts the eletrochemical charging with hydrogen to control the hydrogen content of the bainitic steel in the experiments,evaluates the sensibility of hydrogen embrittlement with the slow strain rate tests,and proves that the material’s critical hydrogen content is 0.00013%and the normalization process can reduce the hydrogen content by 0.00002%~0.00003%,so as to provide the reference to control the hydrogen content indexes of the railway steel frog’s bainitic steel material.

关 键 词：氢脆 电化学充氢 慢速拉伸 

分 类 号：TU511.3[建筑科学—建筑技术科学]