Microstructural analysis of laser weld fusion zone in Haynes 282 superalloy

被引：70
作者：
Osoba, L. O. [1 ]
Ding, R. G. [2 ]
Ojo, O. A. [1 ]
机构：
[1] Univ Manitoba, Dept Mech & Mfg Engn, Winnipeg, MB R3T 5V6, Canada
[2] Univ Birmingham, Dept Met & Mat Engn, Birmingham B15 2TT, W Midlands, England
来源：
MATERIALS CHARACTERIZATION | 2012年 / 65卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Joining; Superalloy; Welding; LIQUATION CRACKING; SOLIDIFICATION; NB;
D O I：
10.1016/j.matchar.2011.12.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Analytical electron microscopy and spectroscopy analyses of the fusion zone (FZ) microstructure in autogenous laser beam welded Haynes 282 (HY 282) superalloy were performed. The micro-segregation patterns observed in the FZ indicate that Co, Cr and Al exhibited a nearly uniform distribution between the dendrite core and interdendritic regions while Ti and Mo were rejected into the interdendritic liquid during the weld solidification. Transmission electron diffraction analysis and energy dispersive X-ray microanalysis revealed the second phase particles formed along the FZ interdendritic region to be Ti-Mo rich MC-type carbide particles. Weld FZ solidification cracking, which is sometimes associated with the formation of gamma-gamma' eutectic in gamma' precipitation strengthened nickel-base superalloys, was not observed in the HY 282 superalloy. Modified primary solidification path due to carbon addition in the newly developed superalloy is used to explain preclusion of weld FZ solidification cracking in the material. (C) 2011 Elsevier Inc. All rights reserved.
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页码：93 / 99
页数：7
相关论文
共 23 条
  • [1] Effect of carbon additions on the as-cast microstructure and defect formation of a single crystal Ni-based superalloy
    Al-Jarba, KA
    Fuchs, GE
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 373 (1-2): : 255 - 267
  • [2] Backerud L., 1976, Scand. J. Metall, V3, P225
  • [3] BOWER TF, 1966, T METALL SOC AIME, V236, P624
  • [4] Welding of nickel base superalloy single crystals
    David, SA
    Vitek, JM
    Babu, SS
    Boatner, LA
    Reed, RW
    [J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 1997, 2 (02) : 79 - 88
  • [5] The influence of Nb and C on the solidification microstructures of Fe-Ni-Cr alloys
    DuPont, JN
    Robino, CV
    [J]. SCRIPTA MATERIALIA, 1999, 41 (04) : 449 - 454
  • [6] Solidification of Nb-bearing superalloys: Part II. Pseudoternary solidification surfaces
    DuPont, JN
    Robino, CV
    Marder, AR
    Notis, MR
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (11): : 2797 - 2806
  • [7] Analysis of laser beam weldability of Inconel 738 superalloy
    Egbewande, A. T.
    Buckson, R. A.
    Ojo, O. A.
    [J]. MATERIALS CHARACTERIZATION, 2010, 61 (05) : 569 - 574
  • [8] Microstructure and mechanical response of transient liquid phase joint in Haynes 282 superalloy
    Ghoneim, A.
    Ojo, O. A.
    [J]. MATERIALS CHARACTERIZATION, 2011, 62 (01) : 1 - 7
  • [9] INCONEL-718 - A SOLIDIFICATION DIAGRAM
    KNOROVSKY, GA
    CIESLAK, MJ
    HEADLEY, TJ
    ROMIG, AD
    HAMMETTER, WF
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (10): : 2149 - 2158
  • [10] Nakao Y, 1990, P INT C HIGH TEMP MA, P24
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