Characterization of the Isothermal Precipitation Kinetics of an Al-Zn-Mg-Cu Alloy

被引：14

作者：

Jiang, Fulin ^{[1
]}

Zurob, Hatem S. ^{[2
]}

Purdy, Gary R. ^{[2
]}

Wang, Xiang ^{[2
]}

Zhang, Hui ^{[3
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] McMaster Univ, Dept Mat Sci & Engn, 1280 Main St West, Hamilton, ON L8S 4L7, Canada

[3] Hunan Univ, Hunan Prov Key Lab Spray Deposit Technol & Applic, Changsha 410082, Hunan, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 10期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

ELECTRICAL-RESISTIVITY MEASUREMENTS; ALUMINUM-ALLOYS; DEFORMATION; TEMPERATURE; MICROSCOPY; BEHAVIORS; EVOLUTION;

D O I：

10.1007/s11661-018-4822-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The isothermal precipitation kinetics of an Al-Zn-Mg-Cu alloy was characterized over a wide range of temperatures by means of in situ electrical resistivity measurements, hardness testing, scanning, and transmission electron microscopy. During low temperature isothermal holding, behavior consistent with classical precipitate nucleation, growth, and coarsening was observed. At higher temperatures, the Ostwald coarsening process was characterized and was shown ultimately to result in widely dispersed, incoherent coarse particles. Isothermal temperature-time-precipitate-fraction curves were estimated based on evaluations of in situ electrical resistivity results. Isothermal treatments were observed to influence precipitation during subsequent heating but had little effect on precipitates dissolution. (C) The Minerals, Metals & Materials Society and ASM International 2018

引用

页码：5157 / 5168

页数：12

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