| 钛合金片层组织两相区变形时的流动软化机理分析 |
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| 引用本文： | 宋鸿武,张士宏,程明,李臻熙,曹春晓,包春玲.钛合金片层组织两相区变形时的流动软化机理分析[J].金属学报,2011(4). |
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| 作者姓名： | 宋鸿武 张士宏 程明 李臻熙 曹春晓 包春玲 |
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| 作者单位： | 中国科学院金属研究所;北京航空材料研究院;沈阳铸造研究所钛合金部; |
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| 基金项目： | 国家重点基础研究发展计划资助项目51319~~ |
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| 摘 要： | 钛合金片层组织在两相区变形时流动应力随应变的增加普遍表现为快速硬化和持续软化的特征.为了研究该流动软化的机理,采用等温热压缩实验研究了TC11合金片层组织在温度890—995℃和应变速率0.01—10s~(-1)范围内的热变形行为.理论计算表明α/β片层界面(α片层内孪晶界)产生的Hall-Petch强化效应远大于片层束集边界.TC11合金片层组织高温变形的流动软化机理可归结为硬滑移模式向软滑移模式转变导致Hall-Petch强化效应的减弱.
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| 关 键 词： | TCll钛合金 两相区变形 流动软化 Hall-Petch效应 |
FLOW SOFTENING MECHANSIM OF A Ti ALLOY WITH LAMELLAR STRUCTURE DURING SUBTRANSUS DEFORMATION |
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| SONG Hongwu,ZHANG Shihong,CHENG Ming Institute of Metal Research,Chinese Academy of Sciences,Shenyang LI Zhenxi,CAO Chunxiao Beijing Institute of Aeronautical Materials,Beijing BAO Chunling Titanium Alloy Division,Shenyang Research Institute of Foundry,Shenyang.FLOW SOFTENING MECHANSIM OF A Ti ALLOY WITH LAMELLAR STRUCTURE DURING SUBTRANSUS DEFORMATION[J].Acta Metallurgica Sinica,2011(4). |
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| Authors: | SONG Hongwu ZHANG Shihong CHENG Ming Institute of Metal Research Chinese Academy of Sciences Shenyang LI Zhenxi CAO Chunxiao Beijing Institute of Aeronautical Materials Beijing BAO Chunling Titanium Alloy Division Shenyang Research Institute of Foundry Shenyang |
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| Affiliation: | SONG Hongwu,ZHANG Shihong,CHENG Ming Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016 LI Zhenxi,CAO Chunxiao Beijing Institute of Aeronautical Materials,Beijing 100095 BAO Chunling Titanium Alloy Division,Shenyang Research Institute of Foundry,Shenyang 110023 |
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| Abstract: | |
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| Keywords: | TC11 Ti alloy subtransus deformation flow softening Hall-Petch effect |
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