| 一种新型镍基高温合金的动态再结晶行为 |
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| 引用本文： | 王兴茂,丁雨田,毕中南,于鸿垚,杜金辉,甘斌.一种新型镍基高温合金的动态再结晶行为[J].稀有金属材料与工程,2023,52(2):517-526. |
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| 作者姓名： | 王兴茂 丁雨田 毕中南 于鸿垚 杜金辉 甘斌 |
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| 作者单位： | 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050;钢铁研究总院 高温合金新材料北京市重点实验室，北京 100081,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室，甘肃 兰州 730050,钢铁研究总院 高温合金新材料北京市重点实验室，北京 100081,钢铁研究总院 高温合金新材料北京市重点实验室，北京 100081,钢铁研究总院 高温合金新材料北京市重点实验室，北京 100081,钢铁研究总院 高温合金新材料北京市重点实验室，北京 100081 |
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| 基金项目： | National Key Research and Development Program of China (2017YFA0700703); National Natural Science Foundation of China (51661019 and 92060102); Program for Major Projects of Science and Technology in Gansu Province (145RTSA004); Hongliu First-class Discipline Construction Plan of Lanzhou University of Technology. |
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| 摘 要： | 采用等温热压缩实验研究了一种新型镍基高温合金在不同热变形条件下(变形温度1040～1120℃、应变量0.35～1.2、应变速率0.1 s-1)的动态再结晶行为。通过光学显微镜(OM)、扫描电子显微镜(SEM)和电子背散射衍射仪(EBSD)研究变形温度和应变量对合金热变形过程中组织演变和动态再结晶(DRX)形核机制的影响。结果表明,根据加工硬化率曲线能够准确确定DRX出现的临界应力和临界应变。合金的DRX晶粒体积分数随变形温度和应变量的增加而增加。在高温低应变速率下,不连续动态再结晶(DDRX)和连续动态再结晶(CDRX)形核机制同时发生。随着变形温度的升高,CDRX形核机制减弱,而CDRX机制在高温条件下占据主导。随着应变量的增加,合金中DDRX机制逐渐变强。热变形后期,CDRX仅作为辅助形核机制发挥作用。另外,Σ3孪晶界的形成有助于DRX晶粒的形核。
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| 关 键 词： | 镍基高温合金 热变形特征 动态再结晶行为 形核机制 |
| 收稿时间： | 2022/5/10 0:00:00 |
| 修稿时间： | 2022/6/17 0:00:00 |
Dynamic Recrystallization Behavior of a Novel Ni-based Superalloy |
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| Wang Xingmao,Ding Yutian,Bi Zhongnan,Yu Hongyao,Du Jinhui and Gan Bin.Dynamic Recrystallization Behavior of a Novel Ni-based Superalloy[J].Rare Metal Materials and Engineering,2023,52(2):517-526. |
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| Authors: | Wang Xingmao Ding Yutian Bi Zhongnan Yu Hongyao Du Jinhui and Gan Bin |
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| Affiliation: | State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;Beijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China,State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China,Beijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China,Beijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China,Beijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China,Beijing Key Laboratory of Advanced High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | |
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| Keywords: | Ni-based superalloy hot deformation characteristic DRX behavior nucleation mechanism of DRX |
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