摘要
传统的310S耐热钢焊接板材在高温下长期使用将破坏其合金表面形成的致密保护性氧化膜,使其抗高温和耐腐蚀性能降低,从而限制了其在一些苛刻复杂环境下的应用。在310S耐热钢板材中增加铝元素含量将有效提高其焊接板材在高温条件下的力学性能。采用手工钨极氩弧焊对不同铝含量的310S耐热钢板材进行焊接,利用光学金相显微镜和电子探针(EMPA)对不同铝元素含量的310S耐热钢板材焊接接头在高温条件下的力学性能进行实验研究。研究结果表明:高铝元素含量的310S耐热钢板材具有与母材一样优良的高温力学性能。同时,加铝后310S耐热钢板材具有良好的焊接性能,且无宏观裂纹、夹渣、气孔等缺陷。
The long-term use of traditional 310 S heat-resistant steel welding plate in the condition of high temperature will decompose its compact protective oxide film forming in the surface of the alloy,which reduces its high temperature resistance and corrosion resistance,thus limits the 310 S heat-resistant steel in some harsh and complicated environment. The addition of aluminum will effectively enhance the mechanical properties of 310 S heat-resistant steel welding plate in the condition of high temperature. This article uses the manual argon tungsten-arc welding to weld the 310 S heat-resistant steel plate with different aluminum content,and studies the mechanical properties of 310 S heat-resistant steel plate with different aluminum content in the condition of high temperature by using optical metallographic microscope and electron microprobe analysis（EMPA）. The research results show that the high-temperature mechanical properties of 310 S heat-resistant steel plate with higher aluminum content are basically identical with the parent metal,and the welding property of 310 S heat-resistant steel plate adding the aluminum is better. Meanwhile,there are no macro cracks and several defects existing in the welding plate such as slag inclusion,porosity and so on.
出处
《电焊机》
2015年第4期131-135,共5页
Electric Welding Machine
基金
2012年国家重大技术专项课题(2012ZX04011012)
关键词
310S耐热钢板材
铝含量
氩弧焊
焊接接头
力学性能
310S heat-resistant steel plate
aluminum content
argon arc welding
welded joint
mechanical property
作者简介
张凯（1980-），男，河南郑州人，讲师，硕士．主要从事机械设计制造、智能控制的研究工作。
