压力容器2009，Vol.26Issue(7)：46-52,7.DOI:10.3969/j.issn.1001-4837.2009.07.010
焊后热处理对BHW35钢焊接接头组织性能的影响
Effect of Postweld Heat- treatment on Microstrueture and Mechnical Properties of BHW35 Steel Welded Joint
王香云 1王文先 2王保东1
作者信息
- 1. 太原理工大学材料科学与工程学院,山西,太原,030024
- 2. 太原锅炉集团有限公司,山西太原,030021
- 折叠
摘要
Abstract
The methods of shielded metal are welding were employed in this study. E7015 -D2 electrode matched with the postweld heat-treatment systems of normalizing, drawing temper in different cooling velocity and stress relief annealing were utilized. The experiment applied mechanical properties of bend, tension and impaet on the welded joint , furthermore, its metallograph and SEM fraetograph of tensile and impact fracture were analyzed. The results indicate that welding properties of the method in air eooling were satisfied . But in slow cooling the lateral tensile strength of welded joint was below speeified mini-mum tensile strength of base metal, the impact toughness was lower than that in air cooling. The ability of eraek extended resistance of welded joint was lower than that in air cooling. The SEM fraetograph in slow eooling exhibit admixture characteristic of quasi - eleavage and duefile dimple, which has testified this point.关键词
BHW35钢/焊接接头/焊后热处理/金相及力学性能/断口形貌Key words
BHW35 steel/ welded joint/ postweld heat - treatment/ metallograph and mechanieal proper-ties / SEM fraetographs分类
矿业与冶金引用本文复制引用
王香云,王文先,王保东..焊后热处理对BHW35钢焊接接头组织性能的影响[J].压力容器,2009,26(7):46-52,7.
