Characterization of Hot Deformation Behavior of a Novel Al–Cu–Li Alloy Using Processing Maps

被引:0
|
作者
Xin-Xiang Yu
Yi-Ran Zhang
Deng-Feng Yin
Zhi-Ming Yu
Shu-Fei Li
机构
[1] Central South University,School of Materials Science and Engineering
[2] Yantai Nanshan University,School of Engineering
关键词
Al–Cu–Li alloy; Hot deformation behavior; Microstructure evolution; Processing maps;
D O I
暂无
中图分类号
学科分类号
摘要
The isothermally compression deformation behavior of an elevated Cu/Li weight ratio Al–Cu–Li alloy was investigated under various deformation conditions. The isothermal compression tests were carried out in a temperature range from 300 to 500 °C and at a strain rate range from 0.001 to 10 s−1. The results show that the peak stress level decreases with temperature increasing and strain rate decreasing, which is represented by the Zener–Hollomon parameter Z in the hyperbolic sine equation with the hot deformation activation energy of 218.5 kJ/mol. At low Z value, the dynamic recrystallized grain is well formed with clean high-angle boundaries. At high Z value, a high dislocation density with poorly developed cellularity and considerable fine dynamic precipitates are observed. Based on the experimental data and dynamic material model, the processing maps at strain of 0.3, 0.5 and 0.7 were developed to demonstrate the hot workability of the alloy. The results show that the main softening mechanism at high Z value is precipitate coarsening and dynamic recovery; the dynamic recrystallization of the alloy can be easily observed as ln Z ≤ 29.44, with peak efficiency of power dissipation of around 70%. At strains of 0.3, 0.5 and 0.7, the flow instability domains are found at higher strain rates, which mainly locate at the upper part of processing maps. In addition, when the strain rate is 0.001 or 0.02 s−1, there is a particular instability domain at 300–350 °C.
引用
收藏
页码:817 / 825
页数:8
相关论文
共 50 条
  • [1] Characterization of Hot Deformation Behavior of a Novel Al–Cu–Li Alloy Using Processing Maps
    Xin-Xiang Yu
    Yi-Ran Zhang
    Deng-Feng Yin
    Zhi-Ming Yu
    Shu-Fei Li
    Acta Metallurgica Sinica(English Letters), 2015, 28 (07) : 817 - 825
  • [2] Characterization of Hot Deformation Behavior of a Novel Al-Cu-Li Alloy Using Processing Maps
    Yu, Xin-Xiang
    Zhang, Yi-Ran
    Yin, Deng-Feng
    Yu, Zhi-Ming
    Li, Shu-Fei
    ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2015, 28 (07) : 817 - 825
  • [3] Characterization of hot deformation behavior of as-homogenized Al-Cu-Li-Sc-Zr alloy using processing maps
    Li, Bo
    Pan, Qinglin
    Yin, Zhimin
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 614 : 199 - 206
  • [4] Hot Deformation Behavior and Processing Maps of 2099 Al-Li Alloy
    Bin Chen
    Xiao-lin Tian
    Xiao-ling Li
    Chen Lu
    Journal of Materials Engineering and Performance, 2014, 23 : 1929 - 1935
  • [5] Hot Deformation Behavior and Processing Maps of 2099 Al-Li Alloy
    Chen, Bin
    Tian, Xiao-lin
    Li, Xiao-ling
    Lu, Chen
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2014, 23 (06) : 1929 - 1935
  • [6] Characterization of hot deformation behavior of a Zn-10.2Al-2.1Cu alloy using processing maps
    Guo, Shengli
    Li, Defu
    Wu, Xiaoping
    Xu, Xiaoqing
    Du, Peng
    Hu, Jie
    MATERIALS & DESIGN, 2012, 41 : 158 - 166
  • [7] Characterization of the Hot Deformation Behavior of a Al-Si Alloy Using Processing Maps
    Wang, Ming-liang
    Jin, Pei-peng
    Wang, Jin-hui
    Han, Li
    EIGHTH CHINA NATIONAL CONFERENCE ON FUNCTIONAL MATERIALS AND APPLICATIONS, 2014, 873 : 3 - 9
  • [8] Processing maps and microstructural evolution of Al–Cu–Li alloy during hot deformation
    Sheng-Li Yang
    Jian Shen
    Yong-An Zhang
    Zhi-Hui Li
    Xi-Wu Li
    Shu-Hui Huang
    Bai-Qing Xiong
    Rare Metals, 2019, 38 : 1136 - 1143
  • [9] Characterization of the Hot Deformation Behavior of Cu–Cr–Zr Alloy by Processing Maps
    Yi Zhang
    Hui-Li Sun
    Alex A.Volinsky
    Bao-Hong Tian
    Zhe Chai
    Ping Liu
    Yong Liu
    Acta Metallurgica Sinica(English Letters), 2016, 29 (05) : 422 - 430
  • [10] Characterization of the Hot Deformation Behavior of Cu–Cr–Zr Alloy by Processing Maps
    Yi Zhang
    Hui-Li Sun
    Alex A. Volinsky
    Bao-Hong Tian
    Zhe Chai
    Ping Liu
    Yong Liu
    Acta Metallurgica Sinica (English Letters), 2016, 29 : 422 - 430