摘要
应用ER55-B6焊丝焊接12Cr1MoV耐热钢,焊后进行740℃回火热处理,并对其焊接接头进行了组织分析、强度和维氏硬度测试,以及断口形貌观察。结果表明,回火处理后的焊缝及热影响区组织为铁素体、球化珠光体及均匀分布的第二相质点,相分布合理;断口形貌显示大部分为韧窝,属韧性断裂,抗冲击性好。应用ER55-B6焊丝焊接12Cr1MoV钢,能满足耐热钢焊接性能要求。
ER55-B6 welding wire was used for welding 12CrlMoV heat-resistant steel, the steel was tempered at 740℃ after welding. The strength and hardness of the welding were measured. The morphology of weld fracture was observed by SEM. The results show that the weld seam and heat affected zone after tempering are composed of ferrite, spheroidization of pearlite and uniform distribution of second phase particles, the distribution of second phase is reasonable. The fracture surface shows that most of the dimple is ductile fracture, so with good impact resistance. Using ER55-B6 welding wire welding 12CrlMoV steel can meet the performance requirement of welding heat-resistant steel.
出处
《热加工工艺》
CSCD
北大核心
2011年第21期124-126,共3页
Hot Working Technology
基金
材料腐蚀与防护四川省高校重点实验室开放基金(2009CL05)
