文献类型：期刊文献

英文题名：Investigation on Mechanical Properties of S30403 Austenitic Stainless Steel at Different Temperatures

作者：Lu, Yaqing[1];Hui, Hu[1]

机构：[1]Univ Sci & Technol, East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：140

期号：2

外文期刊名：JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20181004857621);WOS:【SCI-EXPANDED(收录号:WOS:000426460200018)】；

基金：National Natural Science Foundation of China (Grant No. 51775187).

语种：英文

外文关键词：austenitic stainless steel; mechanical property; maximum allowable stress; temperature

摘要：In order to study the influence of cryogenic temperature on the mechanical properties, a series of uniaxial tensile experiments were performed at different temperatures (20 degrees C, 0 degrees C, -20 degrees C, -40 degrees C, -80 degrees C, -120 degrees C, -196 degrees C) for the austenitic stainless steel S30403 (both the base material and weld joint). R-p0.2 (0.2% proof strength), R-p1.0 (1% proof strength), R-m (tensile strength), A (elongation after fracture), Z (reduction of area), sigma(cr) (a critical threshold stress for onset of discontinuous yielding), and R-h (second hardening ratio, R-m/sigma(cr)) were taken into consideration. It was found that in GB150, ASME VIII-1, and EN13445, the maximum allowable stress for austenitic stainless steel at low temperature (<= 20 degrees C) was dependent on the yielding strength at room temperature (20 degrees C). Compared with R-p0.2, R-p1.0 had a linear relationship with temperature. Synthetically considering the first hardening and the second hardening, both the base material and weld joint presented a better strength performance at low temperatures. The plasticity of base material dropped as the temperature decreased, and it was kept at an acceptable level. Nonetheless, the plasticity of weld joint was nonlinear because of the non-uniform structure components.