留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
Volume 26 Issue 2
Feb.  2019
Turn off MathJax
目录
数据统计

分享

计量
  • 文章访问数:  454
  • HTML全文浏览量:  82
  • PDF下载量:  15
  • 被引次数: 0
文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(2): 251-259
Arash Khakzadshahandashti, Mohammad Reza Rahimipour, Kourosh Shirvani, and Mansour Razavi, Weldability and liquation cracking behavior of ZhS6U superalloy during electron-beam welding, Int. J. Miner. Metall. Mater., 26(2019), No. 2, pp. 251-259. https://doi.org/10.1007/s12613-019-1730-z
Cite this article as:
Arash Khakzadshahandashti, Mohammad Reza Rahimipour, Kourosh Shirvani, and Mansour Razavi, Weldability and liquation cracking behavior of ZhS6U superalloy during electron-beam welding, Int. J. Miner. Metall. Mater., 26(2019), No. 2, pp. 251-259. https://doi.org/10.1007/s12613-019-1730-z
shu
引用本文 PDF XML SpringerLink
研究论文

Weldability and liquation cracking behavior of ZhS6U superalloy during electron-beam welding

  • Department of Ceramic, Materials and Energy Research Center, Karaj 31787316, Iran

  • Department of Material and Renewal Energy, Iranian Research Organization for Science and Technology (IROST), Tehran 33535111, Iran

  • 通讯作者:

    Mohammad Reza Rahimipour    E-mail: m-rahimi@merc.ac.ir

  • The weldability of the ZhS6U nickel-based superalloy, which is prone to solidification cracking during electron-beam welding (EBW) repair processes, was investigated. The effects of two different pre-weld heat-treatment cycles on the final microstructure before and after welding were examined. Welds were made on flat coupons using an EBW machine, and the two heat-treatment cycles were designed to reduce γ' liquation before welding. Microstructural features were also examined by optical and scanning electron microscopy. The results showed that the change in the morphology and size of the γ' precipitates in the pre-weld heat-treatment cycles changed the ability of the superalloy to release the tensile stresses caused by the matrix phase cooling after EBW. The high hardness in the welded coupons subjected to the first heat-treatment cycle resulted in greater resistance to stress release by the base alloy, and the concentration of stress in the base metal caused liquation cracks in the heat-affected zone and solidification cracks in the weld area.
    • Research Article

    Weldability and liquation cracking behavior of ZhS6U superalloy during electron-beam welding

    + Author Affiliations
      Abstract
    • The weldability of the ZhS6U nickel-based superalloy, which is prone to solidification cracking during electron-beam welding (EBW) repair processes, was investigated. The effects of two different pre-weld heat-treatment cycles on the final microstructure before and after welding were examined. Welds were made on flat coupons using an EBW machine, and the two heat-treatment cycles were designed to reduce γ' liquation before welding. Microstructural features were also examined by optical and scanning electron microscopy. The results showed that the change in the morphology and size of the γ' precipitates in the pre-weld heat-treatment cycles changed the ability of the superalloy to release the tensile stresses caused by the matrix phase cooling after EBW. The high hardness in the welded coupons subjected to the first heat-treatment cycle resulted in greater resistance to stress release by the base alloy, and the concentration of stress in the base metal caused liquation cracks in the heat-affected zone and solidification cracks in the weld area.
      • FullText(HTML)
    • loading
      • Supplements(0)
      • References(16)
    • [1]
      M.A. Godovanets, B.A. Prusakov, and I.I. Lysenko, Regenerative heat treatment of blades of high-temperature nickel alloys, Met. Sci. Heat. Treat., 38(1996), No. 5, p. 202.
      [2]
      M.F. Chiang and C. Chen, Induction-assisted laser welding of IN-738 nickel-base superalloy, Mater. Chem. Phys., 114(2009), No. 1, p. 415.
      [3]
      A.T. Egbewande, R.A. Buckson, and O.A. Ojo, Analysis of laser beam weldability of Inconel 738 superalloy, Mater. Charact., 61(2010), No. 5, p. 569.
      [4]
      Y. Danis, C. Arvieu, E. Lacoste, T. Larrouy, and J.M. Quenisset, An investigation on thermal, metallurgical and mechanical states in weld cracking of Inconel 738LC superalloy, Mater. Des., 31(2010), No. 1, p. 402.
      [5]
      M. Montazeri and F.M. Ghaini, The liquation cracking behavior of IN738LC superalloy during low power Nd:YAG pulsed laser welding, Mater. Charact., 67(2012), p. 65.
      [6]
      M. Prager, Welding of Precipitation-Hardening Nickel-Base Alloys, Welding Research Council, New York, 1968.
      [7]
      H.A. Shahsavari, A.H. Kokabi, and S. Nategh, Effect of preweld microstructure on HAZ liquation cracking of Rene 80 superalloy, Mater. Sci. Technol., 23(2007), No. 5, p. 547.
      [8]
      O.A. Ojo, Intergranular liquation cracking in heat affected zone of a welded nickel based superalloy in as cast condition, Mater. Sci. Technol., 23(2007), No. 10, p. 1149.
      [9]
      T. Böllinghaus, H. Herold, C.E. Cross, and J.C. Lippold, Hot Cracking Phenomena in Welds Ⅱ, Springer, Berlin, 2008.
      [10]
      M. Qian and J.C. Lippold, The effect of annealing twin-generated special grain boundaries on HAZ liquation cracking of nickel-base superalloys, Acta Mater., 51(2003), No. 12, p. 3351.
      [11]
      O.A. Ojo, N.L. Richards, and M.C. Chaturvedi, Contribution of constitutional liquation of gamma prime precipitate to weld HAZ cracking of cast Inconel 738 superalloy, Scripta Mater., 50(2004), No. 5, p. 641.
      [12]
      O.A. Ojo, N.L. Richards, and M.C. Chaturvedi, Microstructural study of weld fusion zone of TIG welded IN 738LC nickel-based superalloy, Scripta Mater., 51(2004), No. 7, p. 683.
      [13]
      J.M. Kalinowski, Weldability of a Nickel-Based Superalloy, NASA Contractor Report 195376, 1994.
      [14]
      V.M. Polyanskii, V.V. Gavrilyuk, V.Z. Zagorskii, A.V. Logunov, A.M. Polyanskii, and M.I. Silis, Structure, properties, and fracture mechanism of cast refractory nickel alloy, Met. Sci. Heat Treat., 46(2004), No. 9-10, p. 392.
      [15]
      M.J. Donachie and S.J. Donachie, Superalloys:A Technical Guide, 2nd Ed., ASM International, Ohio, 2002.
      [16]
      O. Hunziker, D. Dye, and R.C. Reed, On the formation of a centreline grain boundary during fusion welding, Acta Mater., 48(2000), No. 17, p. 4191.
      • Relative Articles
      Cited By

    Catalog


    • /

      返回文章
      返回

      版权所有 ©《矿物冶金与材料学报（英文）》编辑部

      地址：北京市海淀区学院路30号邮政编码：100083

      电子邮箱：journal@ustb.edu.cn电话：+86-10-62332875

      本系统由 北京仁和汇智信息技术有限公司 开发    百度统计