摘要
采用夏比冲击、拉伸、正反弯曲、金相和腐蚀试验研究了316L不锈钢/X60管线钢复合板对接焊缝的性能。结果表明,该冶金复合板对接焊缝强度达到523 MPa,0℃冲击韧性为128 J,其他力学性能也达到相关标准要求;焊缝晶间腐蚀试验和HIC试验均未见裂纹,焊缝对晶间腐蚀和氢致裂纹不敏感;管线钢侧焊缝区组织特征为先共析铁素体+针状铁素体,ER309M不锈钢填充过渡区及复层316L不锈钢侧填充区组织均为奥氏体+铁素体。
The properties of clad plate butt weld of 316L stainless steel and X60 pipeline steel were investigated by V-notch Charpy impact toughness test, tensile test, bending test, metallographic test and corrosion test. The results indicated that the weld strength of the above metallurgy composite plate reaches 523 MPa, the impact toughness is 128 J at 0 ℃, other mechanical properties are also meet the requirements of relevant standards; No cracks appear in weld intergranular corrosion test and HIC test, it shows that the weld is not sensitive to intergranular corrosion and HIC; The side weld area of pipeline steel structure characteristics of proeutectoid ferrite＋acicular ferrite, ER309M stainless steel filling transition zone and cladding 316L stainless steel side filling area organization are all austenite and ferrite.
出处
《焊管》
2014年第12期5-9,15,共6页
Welded Pipe and Tube
基金
国家"863"计划项目课题:双金属层状结构复合管材技术研究(2013AA031303)
