摘要
通过拉伸、冲击和金相检验等试验方法对S355钢半自动气体保护焊焊接接头的力学性能与显微组织进行了研究。结果表明:采用JM-56焊丝对S355钢进行焊接时,接头具有较好的抗剪强度和低温冲击韧性;焊缝组织主要为先共析铁素体、针状铁素体、少量珠光体和粒状贝氏体。熔合区、过热区主要为先共析铁素体及较多的珠光体和一定量的粒状贝氏体。
Mechanical properties and microstructures of S355 steel welded joints which were gotten from Ar ＋CO2 gas shielded arc welding were studied via tensile, impact and metallographic test etc.. The results showed that the joints of S355 steel welded with wire JM-56 had fine shear strength and mechanical properties. Microstructure in the welded seam mainly contains pro-eutectoid ferrite, acicular ferrite and a little pearlite as well as granular bainite. The fusion area and overheated zong of heat-affected zone mainly contains pro-eutectoid ferrite, some pearlite and definite quantity granular bainite.
出处
《理化检验（物理分册）》
CAS
2008年第11期600-603,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
