Study on the Microstructure and Mechanical Properties of 15CrMoR

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 472-475)
• Pages: 2731-2735
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.472-475.2731
• Online since: February 2012
• Authors: Xiao Dong Hu, Qing Kun He, Jian Tao Lv, Yong Zhang
• Keywords: 15CrMoR, Mechanical Property, Microstructure, Weld Joint

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