Thermodynamic and Kinetic Calculation of High Strength Aluminum-Lithium Alloy

被引：6

作者：

Wang, Jinsan ^{[1
]}

Xiao, Xiang ^{[2
]}

机构：

[1] AECC Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

[2] Chinalco Mat & Applicat Res Inst, Beijing 102209, Peoples R China

来源：

CRYSTALS | 2022年 / 12卷 / 04期

关键词：

high strength Al-Li alloy; phase diagram; thermodynamic; kinetic; PRECIPITATION; MICROSTRUCTURE;

D O I：

10.3390/cryst12040472

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

High strength Al-Li alloy is the research focus of aluminum alloy. In the present paper, high strength Al-Li alloy 2A97 composed of Al-Li-Cu-Zn-Mg-Mn-Zr system is studied by thermodynamic and kinetic calculation. The equilibrium phase diagram and the metastable phases of 2A97 were calculated by thermodynamic method. The solidification phase diagram of 2A97 was obtained using the Scheil-Gulliver model. The continuous cooling transformation diagram and isothermal aging curves were calculated using the kinetic method. In addition, the 2A97 microstructures of cast, homogenized, hot-rolled, and solid solution were observed by a scanning electron microscope. The results can be used for the process optimization and microstructure control of 2A97. In particular, the research results of this work can be used for the determination of the homogenization temperature and solid-solution temperature.

引用

页数：16

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