焊接热输入量对E36高强度钢接头金相组织及机械性能的影响  

The Affect of Microstructure and Mechanical Properties from Welding Heat Input

作　　者：施洪慧 

机构地区：[1]领新(南通)重工有限公司,江苏南通226017

出　　处：《船舶标准化工程师》2014年第3期51-53,共3页Ship Standardization Engineer

摘　　要：针对E36高强度钢,通过对不同焊接参数下焊接接头金相组织的变化和机械性能的影响进行分析研究,结果发现若焊接参数选择不当,焊接过程过大的热输入会造成焊接接头金相组织的变化,碳化物在晶界聚集偏析,从而极大降低了接头的冲击性能,导致冲击值极低,而抗拉强度和弯曲无明显影响。Referring to the high-strength steel, this paper analyzes the affect of microstructure and mechanical properties in welding joint with different welding parameters. The result is when choose incorrect welding parameter, the very large heat input during welding will cause the microstructure change, then carbenium segregates at grain boundaries, and thus it reduces more the impact value. But the tensile strength and bend have no obvious effect.

关 键 词：焊接热输入 E36钢板 焊接参数 机械性能 冲击值 

分 类 号：TG401[金属学及工艺—焊接]