利用扫描电镜(SEM)、透射电镜(TEM)观察镍基合金焊缝/X60钢焊接接头微观组织,能谱分析(EDS)测试Cr,Ni,Mo,Fe合金元素在各区域分布,并通过计算获得Mn,C在部分熔化区含量.结果表明:完全混合区为树枝状奥氏体组织,Mo偏析到枝晶间隙.不完全混合区是平面晶形貌,未出现偏析现象,宽度约30μm,在该区内从熔合线到完全混合区,Cr,Ni,Mo含量逐渐增加,X60钢母材Fe含量逐渐降低.部分熔化区是由马氏体基体上镶嵌着大量的第二相粒子构成,仅200nm宽.
参考文献
| [1] | PHANIKUMAR G;DUTTA P;CHATTOPADHYAY K .Computational modelling of laser welding of Cu-Ni dissimilar couple[J].Metallurgical Materials Transactions B,2004,35(04):339-350. |
| [2] | Chatterjee S;Abinandanan TA;Chattopadhyay K .Microstructure development during dissimilar welding: Case of laser welding of Ti with Ni involving intermetallic phase formation[J].Journal of Materials Science,2006(3):643-652. |
| [3] | Magnabosco I;Ferro P;Bonollo F;Arnberg L .An investigation of fusion zone microstructures in electron beam welding of copper-stainless steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):163-173. |
| [4] | SAVAGE W;NIPPES E;SZEKERES E .A study of weld interface phenomena in a low alloy steel[J].Welding Journal,1976,55(09):s260-s268. |
| [5] | PAN C;WANG R;GUI J et al.Direct TEM observation of microstructures of the austenitic/carbon steel welded joint[J].Journal of Materials Science,1990,25(07):3281-3285. |
| [6] | PAN C;ZHANG Z .Morphologies of the transition region in dissimilar austenitic-ferritic welds[J].Materials Characterization,1996,36(01):5-10. |
| [7] | PRESSOUYRE G M;CHAILLET J M;VALETTE G.Parameters affection the hydrogen disbanding of austenitic stainless cladded steels[A].Washington:American Society for Metals,1982 |
| [8] | J.N. DUPONT;C.S. KUSKO .Technical Note: Martensite Formation in Austenitic/Ferritic Dissimilar Alloy Welds[J].Welding Journal,2007(2):51s-54s. |
| [9] | MATSUDA F;NAKAGAWA H;TSURUTA S .Proposal of hydrogen blistering mechanism associated with disbanding between 2.25%Cr-1%Mo steel and type 309 stainless steel overlaid metal[J].Transactions of JWRI(Joining and Welding Research Institute of Osaka University),1986,15(02):207-208. |
| [10] | LORIA E A .The status and prospects of alloy 718[J].Journal of Metals,1988,40(07):36-41. |
| [11] | LEONARD R B .Thermal stability of hastelloy alloy C-276[J].Corrosion,1967,25(05):222-228. |
| [12] | DUPONT J N;BANOVIC W;MARDER A R .Microstructural evolution and weldability of dissimilar welds between a super austenitic stainless steel and nickel-based alloy[J].Welding Journal,2003,82(06):s125-s135. |
| [13] | BAKER H.ASM Handbook,Vol 3,Alloy Phase Diagrams,Materials Park[M].Ohio:ASM International,1992:3-48. |
| [14] | GOOCH T G .Corrosion behaviour of welded stainless steel[J].Welding Journal,1996,75(05):s135-s154. |
| [15] | TUTHILL A;AVERY R .Corrosion behavior of stainless steel and high-alloy weldments in aggressive oxidizing environments[J].Welding Journal,1993,72(02):s41-s49. |
| [16] | J.N.Dupont;C.V.Robino;A.R.Marder .Modeling solute redistribution and microstructural development in fusion welds of Nb-Bearing superalloys[J].Acta materialia,1998(13):4781-4790. |
| [17] | DUPONT J N;ROBINO C V;MARDER A R .Solidification of Nb-bearing superalloy:partⅡ,pseudoternary solidification surfaces[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29(11):2797-2806. |
| [18] | LUNDIN C D;LIU W;ZHOU G et al.Unmixed zones in arc welds:significance on corrosion resistance of high molybdenum stainless steels[R].New York:Welding Research Council(WRC),1998. |
| [19] | J. N. DUPONT .Microstructural Development and Solidification Cracking Susceptibility of a Stabilized Stainless Steel[J].Welding Journal,1999(7):0-0. |
| [20] | 霍立兴.焊接结构的断裂行为及评定[M].北京:机械工业出版社,2000:358-363. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%