Experimental investigation of austenitic stainless steel material at elevated temperatures

被引：50

作者：

Fan, Shenggang ^{[1
]}

Jia, Lianlian ^{[1
]}

Lyu, Xiao ^{[1
]}

Sun, Wenjun ^{[1
]}

Chen, Meihe ^{[1
]}

Zheng, Jiacheng ^{[1
]}

机构：

[1] Southeast Univ, Minist Educ, Sch Civil Engn, Key Lab Concrete & Prestressed Concrete Struct, Sipailou 2, Nanjing 210096, Jiangsu, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 155卷

基金：

中国国家自然科学基金;

关键词：

Austenitic stainless steel; Mechanical properties; Elevated temperatures; Steady state test; Transient state test; STRESS-STRAIN CURVES; STRENGTH ENHANCEMENTS; FIRE RESISTANCE; HOLLOW SECTION; COLUMNS;

D O I：

10.1016/j.conbuildmat.2017.08.047

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Based on 530408 austenitic stainless steel, the mechanical properties of materials in flat and corner regions were investigated by steady state tests and transient state tests at elevated temperatures. The stress-strain curves of stainless steel at elevated temperatures obtained by the two test methods were compared and analysed. The results show that the mechanical properties of stainless steel obtained by the two test methods are approximately equivalent when the temperatures are lower than 700 degrees C; otherwise, the mechanical properties obtained by the two test methods are not completely equivalent. The formulae of the reduction coefficient of mechanical properties of stainless steel at elevated temperatures were put forward. The influences of strain hardening indices n(theta) and m(theta) on the stress-strain curves of stainless steel at elevated temperatures were simulated. The results show that there are large deviations in the strain hardening indices obtained by different tests. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：267 / 285

页数：19

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