武汉工程大学学报2018，Vol.40Issue(2)：228-232,5.DOI:10.3969/j.issn.1674⁃2869.2018.02.021
室温与超低温时奥氏体不锈钢S30408的屈强比
Austenitic Stainless Steel S30408 Yield Ratio at Room Temperature and Ultra-Low Temperature
摘要
Abstract
To compare and evaluate the variation rules of the steel yield ratio under different temperature conditions,a comparison and evaluation system for yield ratio of different temperature steels was established by using the theories of probability and mathematical statistics. Based on the valid tensile test data of non-pre-stressed austenitic stainless steel S30408 at room temperature and liquid nitrogen temperature,the change of the yield ratio was compared and evaluated when the bilateral confidence was 99%.The mean values of yield ratio ranged from 0.397 0 to 0.426 0,the standard deviation ranged from 0.003 3 to 0.027 7,and the coefficient of variation ranged from 0.007 7 to 0.069 7 under room temperature.While the mean values of yield ratio ranged from 0.290 3 to 0.320 7,the standard deviation ranged from 0.031 1 to 0.050 2,and the coefficient of variation ranged from 0.096 9 to 0.170 7 at liquid nitrogen temperature.关键词
温度/屈强比/变化规律/奥氏体不锈钢Key words
temperature/yielding ratio/variation rules/austenitic stainless steel分类
机械制造引用本文复制引用
刘岑,杨帆,刘兵,袁小会,陈帆,刘小宁..室温与超低温时奥氏体不锈钢S30408的屈强比[J].武汉工程大学学报,2018,40(2):228-232,5.基金项目
湖北省教育厅科研项目(B2016545) （B2016545）
武汉市黄鹤英才(教育)计划资助项目 （教育）
