电焊机2012，Vol.42Issue(10)：62-65,4.
Domex700MC钢焊接接头热影响区显微组织及微动磨损性能
Research on microstructure and fretting wear behavior of HAZ of Domex700MC steel welded joint
章友谊 1冉传海 1侯勇1
作者信息
- 1. 四川工程职业技术学院,四川德阳618000
- 折叠
摘要
Abstract
The Domex700MC HSLA steel was welded by the CO2 gas shielded welding with flux-cored wire and good joints were obtained.The microstructure of HAZ (heat-affected zone)of the welded joints were analyzed by optical metallographic microscope. The fretting wear behavior of HAZ in room temperature are investigated on a PLINT fretting wear teat rig.The results show that the microstructure of overheated zone is relatively thick,but this area is harder than other area of HAZ because there is a lot of carbide. Fine grain size and uniform distribution in complete transformation zone.due to the Pearlite is more,so the hardness is higher;The grain is more gross in part of the phase change zone and the effectiveness of brittle zone,the hardness is lower;The fretting wear performance in different parts of HAZ is different, the complete transformation zone is relatively belter.关键词
Domex700MC钢/热影响区/显微组织/显微硬度/微动磨损Key words
Domex700MC steel/HAZ/microstructure/micro-hardness/fretting wear分类
矿业与冶金引用本文复制引用
章友谊,冉传海,侯勇..Domex700MC钢焊接接头热影响区显微组织及微动磨损性能[J].电焊机,2012,42(10):62-65,4.
