Adiabatic shear band localization in an Al-Zn-Mg-Cu alloy under high strain rate compression

被引：31

作者：

Khan, Muhammad Abubaker ^{[1
]}

Wang, Yangwei ^{[1
,2
]}

Yasin, Ghulam ^{[3
]}

Nazeer, Faisal ^{[1
]}

Malik, Abdul ^{[1
]}

Ahmad, Tahir ^{[4
]}

Khan, Waheed Qamar ^{[5
]}

Nguyen, Tuan Anh ^{[6
]}

Zhang, Hao ^{[7
]}

Afifi, Mohamed A. ^{[8
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Natl Key Lab Sci & Technol Mat Shock & Impact, Beijing 100081, Peoples R China

[3] Beijing Univ Chem Technol, Coll Mat Sci & Engn, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[4] Univ Punjab, Coll Engn & Emerging Technol, Lahore, Pakistan

[5] Bahauddin Zakariya Univ, Inst Adv Mat, Multan 60800, Pakistan

[6] Vietnam Acad Sci & Technol, Inst Trop Technol, Hanoi, Vietnam

[7] Jiangsu Haoran Spray Forming Alloy Co Ltd, Zhenjiang, Jiangsu, Peoples R China

[8] Brunel Univ London, BCAST, Uxbridge UB8 3PH, Middx, England

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Adiabatic shear bands; Al-Zn-Mg-Cu alloy; High strain rate; Precipitates; AA7055; ALUMINUM-ALLOY; MICROSTRUCTURE EVOLUTION; FLOW BEHAVIOR; BALLISTIC IMPACT; PRECIPITATION; RECRYSTALLIZATION; DEFORMATION; SEGREGATION; ORIENTATION; TEMPERATURE;

D O I：

10.1016/j.jmrt.2020.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An investigation was conducted to study the effect of high strain rate compression on the microstructure and mechanical properties of a spray deposited and hot formed by forging and extrusion followed by T74 (393 K/8h + 433 K/24 h) heat treatment Al-Zn-Mg-Cu alloy. The results show that the strength of the Al alloy is increased with increasing strain rate from 1.0 x 10(-3) s(1) to 5.0 x 10(-3) s(1) assisted by the strain hardening rate effect. Typical adiabatic shear bands area is found in the Al-Zn-Mg-Cu alloy after compression at high strain rate. Grains are significantly refined within the shear bands areas to similar to 180 nm assisted by the dislocation accumulation combined with the temperature rise during the high strain rate compression. Precipitates are observed within the shear bands mainly of fine eta' precipitates. These precipitates are close to Mg (Zn, Cu, Al)(2) assisted by diffusion provided by dislocations. (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：3977 / 3983

页数：7

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