| 块体纳米晶Al-Zn-Mg-Cu合金的微区力学性能和变形机制 |
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| 引用本文： | 陈汉宾,王子涵,杨滨. 块体纳米晶Al-Zn-Mg-Cu合金的微区力学性能和变形机制[J]. 材料研究学报, 2010, 24(4) |
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| 作者姓名： | 陈汉宾 王子涵 杨滨 |
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| 作者单位： | 中国兵器工业第五九研究所,重庆,400039;北京科技大学新金属材料国家重点实验室,北京科技大学,北京,100083 |
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| 基金项目： | 国家八六三计划新材料领域2002AA302502资助项目~~ |
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| 摘 要： | 研究了块体纳米晶Al-10Zn-2.8Mg-118Cu合金热处理前后的微区力学性能和变形机制,结果表明:块体纳米晶Al-10Zn-2.8Mg-1.8Cu合金经T6处理后杨氏模量没有明显的变化,硬度明显提高;在SPS试样中可观察到明显的室温蠕变和剪切带,随着应变速率的增加,室温蠕变越来越明显,但是剪切带越来越不明显;而在T6态试样中很难观察到室温蠕变和剪切带。T6处理改变了第二相粒子的形貌和分布,是产生这一现象的原因。
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| 关 键 词： | 金属材料 纳米压痕 纳米晶Al-Zn-Mg-Cu合金 室温蠕变 变形机制 |
Mechanical Properties and Deformation Mechanics at Small Scales for the Bulk Nanostructured Al-Zn-Mg-Cu Alloys |
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| CHEN Hanbin WANG Zihan YANG Bin .No. Mechanical Properties and Deformation Mechanics at Small Scales for the Bulk Nanostructured Al-Zn-Mg-Cu Alloys[J]. Chinese Journal of Materials Research, 2010, 24(4) |
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| Authors: | CHEN Hanbin WANG Zihan YANG Bin .No |
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| Affiliation: | CHEN Hanbin~(1**) WANG Zihan~2 YANG Bin~2 1.No.59 Institute of China Ordnance Industry,Chongqing 400039 2.State Key Laboratory for Advanced Metals , Materials,University of Science , Technology Beijing,Beijing 100083 |
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| Abstract: | Mechanical properties and deformation mechanics at small scales of the bulk nanostructured AI-10Zn-2.8Mg-1.8Cu alloys before and after heat treatment were investigated by nanoindentation. The results showed that no clear change was found in the Yong's modulus(E) but the hardness(H) increased remarkably of the nanostructured alloys after T6 heat treatment.Obvious room temperature creep and notable shear bands were observed in the as-SPSed samples.In addition,room temperature creep became obvious and shear ba... |
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| Keywords: | metallic materials nanoindentaion nanostructured Al-Zn-Mg-Cu alloy room temperature creep deformation mechanics |
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