标题：Study on the Microstructure and Mechanical Properties of 15CrMoR
作者：Hu Xiaodong; He Qingkun; Lv Jiantao; Zhang Yong
作者机构：[Hu Xiaodong; Lv Jiantao; Zhang Yong] Shandong Univ Sci & Technol, Coll Mech & Elect Engn, Qingdao 266590, Shandong, Peoples R China.; [He Qingkun] 更多
会议名称：3rd International Conference on Manufacturing Science and Engineering (ICMSE 2012)
会议日期：MAR 27-29, 2012
来源：ADVANCED MANUFACTURING TECHNOLOGY, PTS 1-4
关键词：15CrMoR; Weld joint; Microstructure; Mechanical properties
摘要：The butt weld sample with the material of 15CrMoR has been manufactured with the bonding methods of manual electric arc welding (SMAW) and submerged-arc welding (SAW). The relationship between the microstructure and the mechanical properties has been analyzed in this paper, and the conclusions have been obtained as followed: only the last weld layer has the obvious zones of weld zone, heat-affected zone (HAZ) and fusion area for the multi-layer butt weld, the weld zone and the fusion area will be heat-treated by the next layer welding; the hardness along central intersection shows a W-shaped distribution, and the zone with normalizing organization has the lowest hardness and the surface layer has the highest hardness; the mechanical properties of the multi-layer butt weld are much better than the monolayer weld's.