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Coarsening behavior of γ′ and γ″ phases in GH4169 superalloy by electric field treatment
  • ISSN号：1002-185X
  • 期刊名称：《稀有金属材料与工程》
  • 时间：0
  • 分类：TG146.21[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学] V252.2[一般工业技术—材料科学与工程;航空宇航科学与技术—航空宇航制造工程;航空宇航科学技术]
  • 作者机构：[1]Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110819, China, [2]Department of High-temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China
  • 相关基金：financially fnancially supported by the National Natural Science Foundation of China(No.51171039);the Major State Basic Research Development Program of China(No.2010CB631203);the Fundamental Research Funds for the Central Universities of China(No.N100602002);the 2010 Academy Awards Sponsorship of Doctoral Candidate for Newcomer of China(No.22002096)
作者： Lei Wang[1], Yao Wang[1], Yang Liu[1], Xiu Song[1], Xu-dong Lu[2], Bei-jiang Zhang[2]
关键词： GH4169高温合金, 粗化行为, 电场处理, GH4169合金, 正电子湮没寿命谱, 透射电子显微镜, EFT, PALS, superalloys, nickel alloys, precipitation, electric fields, aging, vacancies
中文摘要：

变粗的行为和在 GH4169 合金的阶段在有电场的 1023 和 1073 K，处理(水蜥) 被传播电子显微镜学(TEM ) 和正电子歼灭一生光谱学(伙伴) 调查。变粗的降水发生，这被表明，并且生长激活精力和阶段能被减少到 115.6 和 198.1 kJ

英文摘要：

The coarsening behaviors of γ′ and γ″ phases in GH4169 alloy aged at 1023 and 1073 K with electric field treatment （EFT） were investigated by transmission electron microscopy （TEM） and positron annihilation lifetime spectroscopy （PALS）. It is demonstrated that precipitation coarsening occurs, and the growth activation energies of γ′ and γ″phases can be decreased to 115.6 and 198.1 kJ.mo1-1, respectively, by applying the electric field. The formation of a large number of vacancies in the matrix is induced by EFT. Due to the occurrence of vacancy migration, the diffusion coefficients of A1 and Nb atoms are increased to be 1.6-5.0 times larger than those without EFT at 1023 or 1073 K. Furthermore, the formation of vacancy clusters is promoted by EFT, and the increase in strain energy for the coarsening of γ′ and γ″ phases can be counterbalanced by the formation of vacancy clusters.

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期刊信息
  • 《稀有金属材料与工程》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国有色金属学会 中国材料研究学会 西北有色金属研究院
  • 主编：张平祥
  • 地址：西安市51号信箱
  • 邮编：710016
  • 邮箱：RMME@c-nin.com
  • 电话：029-86231117
  • 国际标准刊号：ISSN：1002-185X
  • 国内统一刊号：ISSN：61-1154/TG
  • 邮发代号:52-172
  • 获奖情况:
  • 首届国家期刊奖,中国优秀期刊一等奖,中国有色金属工业优秀期刊1等奖
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  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:24715