Precipitation Behavior of γ″ in Severely Plastic Deformed Ni-Base Alloys

机译：γ'在严重塑性变形镍基合金中的析出行为

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The precipitation behaviors of γ″(Ni_3Nb) in four Ni-base alloys were investigated. The four alloys were forged Ni20Cr20Fe5Nb alloy, mechanically alloyed Ni20Cr20Fe5Nb alloy, IN 718 alloy and ECAPed(equal channel angular pressing) IN 718 alloy. Aging treatment was employed at either 600℃ or 720℃ for 20 hrs. The TEM observation and hardness test were performed to identify the formation of γ″. The precipitation of γ″ was noticed after aging at 600℃ for 20 hrs in the mechanically alloyed Ni20Cr20Fe5Nb alloy and ECAPed IN 718 alloy, while it was observed after aging at 720℃ for 20 hrs in the forged Ni20Cr20Fe5Nb alloy and IN 718 alloy before ECAP. It seemed that the lower aging temperature for γ″ precipitation in the mechanically alloyed Ni20Cr20Fe5Nb alloy and ECAPed IN 718 alloy than in the forged Ni20Cr20Fe5Nb alloy and IN 718 alloy before ECAP appeared to be due to the severe plastic deformation which occurred during mechanical alloying or ECAP.

机译：研究了γ”（Ni_3Nb）在四种Ni基合金中的析出行为。四种合金分别是锻造的Ni20Cr20Fe5Nb合金，机械合金化的Ni20Cr20Fe5Nb合金，IN 718合金和ECAPed（等通道角压）IN 718合金。在600℃或720℃下进行时效处理20小时。进行TEM观察和硬度测试以鉴定γ''的形成。机械合金化的Ni20Cr20Fe5Nb合金和ECAPed IN 718合金在600℃时效20小时后观察到γ″的析出，而ECAP之前的锻造Ni20Cr20Fe5Nb合金和IN 718合金在720℃时效20小时后观察到。。看来，机械合金化的Ni20Cr20Fe5Nb合金和ECAPed IN 718合金中的γ''析出的时效温度比锻造的Ni20Cr20Fe5Nb合金和IN 718合金中的γ''析出温度低，这是由于在机械合金化或ECAP期间发生了严重的塑性变形。

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来源
《Powder Metallurgy World Congress amp; Exhibition(PM 2006); 20060924-28; Busan(KR)》|2006年|P.213216|共2页
会议地点 Busan(KR)
作者
Il-Ho Kim; S. I. Kwun;
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作者单位

Division of Materials Science and Engineering, Korea University, Seoul 136-701, Korea;

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会议组织
原文格式 PDF
正文语种 eng
中图分类有色金属冶炼;
关键词
γ″precipitate; plastic deformation; mechanical alloying; ECAP; Ni-base alloy;

机译：γ″沉淀；塑性变形；机械合金化； ECAP；镍基合金;

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2. 塑性变形对Mg-Gd-Y-Zr合金析出行为及拉伸断裂行为的影响 [J] . 林丹, 王磊, 刘杨, 中国有色金属学报：英文版 . 2011,第010期
3. Precipitation Behavior of Sc and Zr in Severe Plastic Deformed Al [J] . Bok-Ki Min, Hyung-Wook Kim, Suk-Bong Kang Journal of Korean Institute of Metal and Materials . 2003,第11期

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5. Precipitation behaviors of 14H LPSO lamellae in Mg96Gd3Zn0.5Ni0.5 alloys during severe plastic deformation [J] . Liu Wei, Zhang Jinshan, Xu Chunxiang, Journal of Materials Science . 2017,第22期

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6. Precipitation Behavior of γ″ in Severely Plastic Deformed Ni-Base Alloys [C] . Il-Ho Kim, S. I. Kwun Powder Metallurgy World Congress Exhibition . 2007

机译：γ“在严重塑性变形的Ni碱基合金中的沉淀行为
7. Gamma prime precipitation mechanisms and solute partitioning in Ni-base alloys [D] . Rojhirunsakool, Tanaporn 2014

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Precipitation Behavior of γ″ in Severely Plastic Deformed Ni-Base Alloys

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