Hardenability of 2060 Al-Li alloy

被引：0

作者：

Liu C. ^{[1
]}

Li J.-F. ^{[1
,2
]}

Ning H. ^{[1
]}

Liu D.-Y. ^{[1
]}

Chen Y.-L. ^{[3
]}

Zhang X.-H. ^{[3
]}

Ma P.-C. ^{[3
]}

Tan C.-Y. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Central South University, Changsha

[2] Key Laboratory of Nonferrous Mental Materials Science and Engineering, Ministry of Education, Changsha

[3] Aerospace Research Institute of Materials and Processing Technology, Beijing

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2019年 / 29卷 / 11期

关键词：

2060 Al-Li alloy; Hardenability; Microstructure; Strength;

D O I：

10.19476/j.ysxb.1004.0609.2019.11.01

中图分类号：

学科分类号：

摘要：

The harden ability of 2060 Al-Li alloy was experimentally evaluated by using cold-rolled thin sheets, which combined end-quenching with strength change after aging. The scanning electron microscopy(SEM), transmission electron microscopy(TEM), scanning transmission electron microscopy(STEM) and energy dispersive spectrometer(EDS) were used to analyze the microstructure of samples with T8-aging following end-quenching. The results show that the quenching depth of 2060 Al-Li alloy is 15 mm, the tensile strength is reduced by 5% is defined as the quenching depth. With the distance away from the quenching end increasing, the tensile strength gradually decreases to a stable level. Moreover, there is a significant decreasing in the tensile strength at the location from 12 mm to 18 mm. During the end-quenching process, the Cu-rich phase which reduces the supersaturation of the solid solution precipitates and hinders the precipitation and growth of T1 phase(Al2CuLi) in the same region during the subsequent aging process. The tensile strength is therefore decreased gradually. © 2019, Science Press. All right reserved.

引用

页码：2451 / 2458

页数：7

共 23 条

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