压力容器2016，Vol.33Issue(7)：6-9,17,5.DOI:10.3969/j.issn.1001-4837.2016.07.002
去应力退火温度对Q345 R焊接接头性能及组织的影响
Effect of Stress Relief Annealing Treatment Temperature on Mechanical Properties and Microstructure of Q345 R Joints
张亮 1车鹏程 1陈肇宇 1欧海燕1
作者信息
- 1. 哈尔滨锅炉厂有限责任公司，黑龙江 哈尔滨 150001
- 折叠
摘要
Abstract
The effect of stress relief annealing temperature on mechanical properties and microstructure of Q345 R joints has been investigated.Stress relief annealing treatment (SRAT)were carried out on the Q345R joints at 615,645 and 665 ℃for 5 h after normalizing (915 ℃for 1.25 h),respectively.The re-sults show that the ultimate strength and hardness of Q345 R decreases with increasing SRAT temperature. The ultimate strength of Q345R joints are more than 490 MPa when SRAT at 615 ℃ and 645 ℃,while the ultimate strength is less than 490 MPa which is the lowest value of base metal.The microstructures both weld and base metal of the joint subjected to SCRT at different temperature is (Ferrite+Pearlite). The spheroidizing degrees of cementite increases with increasing SRAT temperature,therefore the ultimate strength and hardness decrease.关键词
去应力退火/正火/焊接接头Key words
stress relief annealing treatment/normalizing/joint分类
机械制造引用本文复制引用
张亮,车鹏程,陈肇宇,欧海燕..去应力退火温度对Q345 R焊接接头性能及组织的影响[J].压力容器,2016,33(7):6-9,17,5.
