合金元素锰和镍对FV520(B)钢焊接接头组织与力学性能的影响
Effects of Mn and Ni on Microstructure and Mechanical Properties of Welded Joint of FV520(B) Steel
摘 要
在低氢碱性渣系药皮中添加中碳锰铁和镍粉,采用FV520(B)钢专用焊芯对FV520(B)钢进行焊接试验,研究了合金元素锰和镍对FV520(B)钢焊缝组织以及接头力学性能的影响.结果表明:在药皮中添加中碳锰铁和镍粉可以向焊缝中过渡奥氏体化合金元素锰和镍,合金元素含量越多,焊缝组织越细化,马氏体片层越细小;加入镍粉和中碳锰铁均可增加焊缝中的奥氏体含量,且前者的效果更好;增加焊缝中的奥氏体含量可在不降低接头强度的情况下提高其冲击韧性.
焊缝组织
奥氏体
冲击韧性
alloy element
microstructure of weld seam
austenite
impact toughness
Abstract
Medium carbon ferromanganese and nickel powders were added to the electrode coating of low hydrogen type basic slag system,and a special core wire used for FV520(B) steel was adopted in the welding test.The effects of alloy elements Mn and Ni on microstructure of weld seam and mechanical properties of joint of FV520(B) steel were analyzed through a series of experiments.The results show that austenitic alloy elements Mn and Ni can be transferred to the weld seam by adding medium carbon ferromanganese and nickel powders to the electrode coating.With the increase of alloy element contents,the microstructure of weld seam is refined,and martensitic layer is finer.Adding medium carbon ferromanganese and nickel powders all can increase the austenite content in the weld seam,and the former is better.The increasing of the austenite content in weld seam can improve the impact toughness of welded joint without lowering the strength.
中图分类号 TG422
所属栏目 新材料新工艺
基金项目 国家自然科学基金资助项目(51274162);国家高技术研究发展计划项目(2013AA031303);陕西省教育厅产业化培训项目(2012JC16)
收稿日期 2014/3/10
修改稿日期 2015/3/13
网络出版日期
作者单位点击查看
备注张敏(1967-),男,陕西西安人,教授,博士.
引用该论文: ZHANG Min,TANG Jiang,LI Ji-hong,LIU Juan-juan. Effects of Mn and Ni on Microstructure and Mechanical Properties of Welded Joint of FV520(B) Steel[J]. Materials for mechancial engineering, 2015, 39(5): 58～62
张敏,唐江,李继红,刘娟娟. 合金元素锰和镍对FV520(B)钢焊接接头组织与力学性能的影响[J]. 机械工程材料, 2015, 39(5): 58～62
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【3】张敏,李岩,李继红,等.一种风机转子用FV520(B)不锈钢碱性焊条的研制[J].中国机械工程,2011,22(22):2749-2753.
【4】牛靖,董俊明,薛锦.沉淀硬化不锈钢FV520(B)的析出硬化及韧性[J].机械工程学报,2007,43(12):78-83.
【5】周倩青,翟玉春.高强高韧FV520B马氏体钢的时效工艺优化[J].金属学报,2009,45(10):1249-1254.
【6】张敏,黄晓江,李继红,等.时效温度对沉淀硬化不锈钢FV520(B)组织及低温性能的影响[J].热加工工艺,2010,39(20):149-155.
【7】张弗天,姜健,宋建先,等.Ni9钢回转奥氏体相变的Mossbauer谱学研究[J].金属学报,1986,22(4):169-175.
【8】李昭东,宫本吾郎,杨志刚,等.Mn和Si对Fe-0.6C钢中珠光体-奥氏体相变的影响[J].金属学报,2010,46(9):1066-1074.
【9】杨钢,王剑星,杨沫鑫.Ni含量对0Cr17Ni4Cu4Nb不锈钢富铜相析出的影响[J].材料热处理学报,2012,33(6):51-56.
【10】HSIAO C N,CHIOU C S,YONG J R.Aging reactions in a 17-4PH stainless steel[J].Materials Chemistry and Physics,2002,74:132-142.
【11】戎咏华,徐祖耀,张梅,等.低碳马氏体型非调质钢在汽车工业中的应用[J].机械工程材料,2001,25(12):1-4.
【12】NAKAGAWA H,MIYAZAKI T.Effect of retained austenite on the microstructure and mechanical properties of martensitic precipitation hardening stainless steel[J].Journal of Materials Science,1999,34:3901-3908.
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