| 形变热处理对AI-zn-Mg-Cu合金板材组织与硬度的影响 |
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| 引用本文： | 张云崖,邓运来,万里,张新明.形变热处理对AI-zn-Mg-Cu合金板材组织与硬度的影响[J].金属学报,2011(10). |
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| 作者姓名： | 张云崖 邓运来 万里 张新明 |
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| 作者单位： | 中南大学材料科学与工程学院;中南大学有色金属材料科学与工程教育部重点实验室; |
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| 基金项目： | 国家重点基础研究发展计划资助项目2010CB731700~~ |
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| 摘 要： | 研究了形变热处理(TMT:固溶-淬火-预析出-轧制)Al-7.81Zn-1.81Mg-1.62Cu合金板材中MgZn2等第二相粒子的析出形貌和数量及其对板材组织、织构和硬度的影响.结果表明,在TMT过程中形成的纳米/亚微米尺寸MgZn2粒子,在固溶处理过程中对亚晶界/晶界迁移形成了强烈的阻碍作用,但不会诱发粒子激发形核(PSN)再结晶.在本文实验条件下,合适的TMT制度可大幅降低材料的再结晶分数,载荷为29.4 kN的Vickers硬度由176 HV提高至203HV(提高了约15%).
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| 关 键 词： | 形变热处理 Al-Zn-Mg-Cu合金 MgZn_2相 再结晶 织构 |
EFFECTS OF THERMAL MECHANICAL TREATMENT ON THE MICROSTRUCTURES AND HARDNESS OF AN Al-Zn-Mg-Cu ALLOY PLATE |
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| ZHANG Yunya,DENG Yunlai School of Materials Science , Engineering,Central South University,Changsha Key Laboratory of Nonferrous Metal Materials Science , Engineering,Ministry of Education,Changsha.EFFECTS OF THERMAL MECHANICAL TREATMENT ON THE MICROSTRUCTURES AND HARDNESS OF AN Al-Zn-Mg-Cu ALLOY PLATE[J].Acta Metallurgica Sinica,2011(10). |
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| Authors: | ZHANG Yunya DENG Yunlai School of Materials Science Engineering Central South University Changsha Key Laboratory of Nonferrous Metal Materials Science Engineering Ministry of Education Changsha |
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| Affiliation: | ZHANG Yunya~(1,2)),DENG Yunlai~(1,WAN Li~(1,ZHANG Xinming~(1,2)) 1)School of Materials Science and Engineering,Central South University,Changsha 410083 2)Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Changsha 410083 |
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| Abstract: | The effects of thermal mechanical treatment(TMT:solution-quenching-precipitationrolling) on the morphology and the amount of the precipitates in an Al-7.81Zn-l.81Mg-l.62Cu alloy plate and the effects of those particles on the microstructures,textures and hardness have been studied. During TMT,MgZn_2 particles with nano/submicron scales significantly inhibit the migration of subgrain /grain boundaries but would not induce particle simulated nucleation(PSN) recrystallization.An appropriate TMT process results... |
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| Keywords: | thermal mechanical treatment Al-Zn-Mg-Cu alloy MgZn_2 phase recrystallization texture |
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