焊管2017，Vol.40Issue(11)：18-21,4.DOI:10.19291/j.cnki.1001-3938.2017.11.004
冷却速度对奥氏体不锈钢焊缝低温AkV2的影响
Influence of Cooling Speed on Low Temperature AkV2 of Austenitici Stainless Steel Weld
张新 1孟新军 1王翰冬 1李伟1
作者信息
- 1. 西安德森新能源装备有限公司,西安710000
- 折叠
摘要
Abstract
In order to optimize the cryogenic impact toughness of austenitic stainless steel weld for mobile pressure vessels,air cooling, gas cooling and copper cooling were taken for austenitic stainless steel weld, the results of tensile test and -196 ℃low-temperature impact test with the three cooling methods were analyzed and compared, the weld microstructure was observed and compared.The analyses showed that,ferrite was uniformly distributed on two sides of columnar crystal,so it has high tensile strength.The results indicated that the fastest cooling rate was by copper cooling,it took 36 s to cool form 900℃to 400℃,and the cryogenic impact toughness of weld at-196℃had optimal value 24.67 J.关键词
奥氏体不锈钢/冷却速度/铜冷/低温韧性/焊缝Key words
austenitici stainless steel/cooling speed/copper cooling/low-temperature toughness/weld分类
矿业与冶金引用本文复制引用
张新,孟新军,王翰冬,李伟..冷却速度对奥氏体不锈钢焊缝低温AkV2的影响[J].焊管,2017,40(11):18-21,4.
