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| 热连轧对GH4169合金蠕变行为的影响 | |
| 引用本文： | 李振荣,田素贵,赵忠刚,陈礼清,刘相华.热连轧对GH4169合金蠕变行为的影响[J].中国有色金属学报,2011(7). |
| 作者姓名： | 李振荣 田素贵 赵忠刚 陈礼清 刘相华 |
| 作者单位： | 1. 沈阳工业大学材料科学与工程学院,沈阳110870;辽宁大学轻型产业学院,沈阳110036 2. 沈阳工业大学材料科学与工程学院,沈阳,110870 3. 东北大学轧制技术及连轧自动化国家重点实验室,沈阳,110004 |
| 基金项目： | 国家自然科学基金重点项目 |
| 摘 要： | 通过对等温锻造和热连轧工艺制备的GH4169合金进行直接时效、蠕变性能测试和组织形貌观察,研究热连轧对GH4169合金组织结构及蠕变行为的影响.结果表明:与等温锻造合金相比,经热连轧后合金的晶粒尺寸较小,在等温锻造期间的变形特征仅为孪晶形变,而合金在热连轧期间除产生孪晶外,在孪晶中还存在位错的双取向滑移；采用不同工艺制备的合金均在{111}面上发生孪晶变形.在蠕变期间,热连轧期间形成的位错可促进孪晶内发生位错的不同取向滑移,减缓应力集中,提高合金蠕变抗力,致使合金在660℃、700 MPa条件下具有较长蠕变寿命. |
| 关 键 词： | GH4169合金 热连轧 孪晶 蠕变 变形特征 |
Influence of hot continuous rolling on creep behaviors of GH4169 superalloy |
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| LI Zhen-rong,TIAN Su-gui,ZHAO Zhong-gang,CHEN Li-qing,LIU Xiang-hua.Influence of hot continuous rolling on creep behaviors of GH4169 superalloy[J].The Chinese Journal of Nonferrous Metals,2011(7). | |
| Authors: | LI Zhen-rong TIAN Su-gui ZHAO Zhong-gang CHEN Li-qing LIU Xiang-hua |
| Affiliation: | LI Zhen-rong1,2,TIAN Su-gui1,ZHAO Zhong-gang1,CHEN Li-qing3,LIU Xiang-hua3 (1.School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110178,China,2.College of Light Industry,Liaoning University,Shenyang 110036,3.State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110004,China) |
| Abstract: | By means of direct aging treatment,the creep properties measurement and microstructure observation of the isothermal forged(ITF) and hot continuous rolling(HCR) GH4169 alloys,the influence of the HCR on the microstructure and creep behavior of GH4169 alloy was investigated.The results show that the grain size of HCR alloy is finer than that of the ITF alloy.The only deformed feature of the ITF alloy is twinning.However,the twinning and dislocation slippings with double orientations in the twinning appear in... |
| Keywords: | GH4169 superalloy hot continuous rolling twinning creep deformation feature |
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