The Metastable Phase Responsible for Peak Hardness and Its Morphology in an Al-Mg-Si Alloy

机译：Al-Mg-Si合金中负责峰硬度及其形貌的亚稳态相

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Precipitation behaviour in an Al-Mg-Si alloy aged at 403 K to 483 K was studied with respect to thermal stability and morphology of the metastable precipitates, using high resolution transmission electron microscopy (HRTEM), Vickers microhardness tests and differential scanning calorimetry (DSC) measurements. The quantitative analysis of the DSC measurements revealed that the change in the first exothermic peak (the peak P) of the metastable phase is proportional to the increases in the Vickers hardness. The HRTEM observations showed the four types of the precipitates in morphology during the isothermal ageing and the change in the peak P was mainly caused by the formation of the precipitates with irregular contrast and the ones with the network interior angle between 65° and 80°.

机译：使用高分辨率透射电子显微镜（HRTEM），维氏显微硬度测试和差示扫描量热法（DSC）研究了403 K至483 K时效的Al-Mg-Si合金的热稳定性和亚稳态沉淀物的形貌）测量。 DSC测量的定量分析表明，亚稳态相的第一个放热峰（峰P）的变化与维氏硬度的增加成比例。 HRTEM观察表明，等温时效过程中有四种类型的析出物，峰P的变化主要是由形成不规则对比度的析出物和网络内角在65°至80°之间的析出物引起的。

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《Pacific Rim International Conference on Advanced Materials and Processing(PRICM 5) pt.1; 20041102-05; Beijing(CN)》|2004年|P.365-368|共4页
会议地点 Beijing(CN)
作者
Koichiro Fukui; Mahoto Takeda; Takao Endo;
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作者单位

Department of materials engineering (SEISAN), Faculty of engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501 Japan;

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原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
Al-Mg-Si alloy; metastable phase; precipitate morphology; DSC measurement; vickers microhardness test; transmission electron microscopy;

机译：Al-Mg-Si合金;相变;析出相; DSC测量;维氏显微硬度测试;透射电镜;

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The Metastable Phase Responsible for Peak Hardness and Its Morphology in an Al-Mg-Si Alloy

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