Investigation of deformation behavior and strain-induced precipitations in Al-Zn-Mg-Cu alloys across a wide temperature range

被引：5
作者：
Zhang, Qingdong [1 ,2 ,3 ]
Zuo, Jinrong [1 ,2 ,3 ]
Yang, Chen [1 ,2 ,3 ]
Xia, Yingxiang [1 ,2 ]
Shu, Xuedao [1 ,2 ]
Mei, Bizhou [4 ]
Wang, Ying [1 ,2 ]
Cui, Long [5 ]
机构：
[1] Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Peoples R China
[2] Zhejiang Prov Key Lab Part Rolling Technol, Ningbo 315211, Peoples R China
[3] Ningbo Engn Res Ctr Intelligent Die Casting New En, Ningbo 315211, Peoples R China
[4] Zhejiang Yiduan Precis Machinery Co Ltd, Ningbo 315100, Peoples R China
[5] Ningbo Junling Mold Technol Co Ltd, Ningbo 315800, Peoples R China
来源：
SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Al-Zn-Mg-Cu alloy; Arrhenius constitutive model; Hot deformation; Strain-induced precipitation; Microstructure; 7055; ALUMINUM-ALLOY; HOT DEFORMATION; DYNAMIC RECRYSTALLIZATION; CONSTITUTIVE MODEL; GRAIN-REFINEMENT; PROCESSING MAP; FLOW BEHAVIOR; COMPRESSION; MECHANISM; WORKABILITY;
D O I：
10.1038/s41598-024-65669-y
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
This study explores the hot deformation behavior of Al-Zn-Mg-Cu alloy through uniaxial hot compression (200 degrees C-450 degrees C) using the Gleeble-1500. True stress-strain curves were corrected, and three models were established: the Arrhenius model, strain compensated (SC) Arrhenius model, and strain compensated recrystallization temperature (RT) segmentation-based (TS-SC) Arrhenius model. Comparative analysis revealed the limited predictive accuracy of the SC Arrhenius model, with a 25.12% average absolute relative error (AARE), while the TS-SC Arrhenius model exhibited a significantly improved to 9.901% AARE. Material parameter calculations displayed variations across the temperature range. The SC Arrhenius model, utilizing an average slope method for parameter computation, failed to consider temperature-induced disparities, limiting its predictive capability. Hot processing map, utilizing the Murty improved Dynamic Materials Model (DMM), indicated optimal conditions for stable forming of the Al-Zn-Mg-Cu alloy. Microstructural analysis revealed MgZn2 precipitation induced by hot deformation, with crystallographic defects enhancing nucleation rates and precipitate refinement.
引用
收藏
页数：22
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