Investigation on the Thermal Deformation Behavior of the Nickel-Based Superalloy Strengthened by γ′ Phase

被引:8
作者
Wang, Haiping [1 ]
Liu, Dong [1 ]
Wang, Jianguo [1 ]
Shi, Yongzhao [1 ]
Zheng, Yong [1 ]
Hu, Yang [1 ]
机构
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源
CRYSTALS | 2019年 / 9卷 / 03期
关键词
Waspaloy; hot compression; deformation behavior; processing map; recrystallization; 7075; ALUMINUM-ALLOY; HOT DEFORMATION; PROCESSING MAP; ARRHENIUS-TYPE; STAINLESS-STEEL; TITANIUM-ALLOY; RECRYSTALLIZATION BEHAVIOR; CONSTITUTIVE RELATIONSHIP; ISOTHERMAL COMPRESSION; PLASTIC-DEFORMATION;
D O I
10.3390/cryst9030125
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The isothermal compression tests of the nickel-based superalloy Waspaloy were carried out under various temperatures from 1040 to 1120 degrees C and strain rates from 0.01 to 10 s(-1) with the height reduction of 60% and the flow stress curves were obtained. The curves show that the flow stress is greatly affected by the temperature and strain rates. Regression analysis of the experimental results was carried out to learn about the deformation behavior through the Arrhenius equation and came to the conclusion that the activation energy of Waspaloy is 669.7 kJ/mol. The constitutive equation of the Waspaloy was constructed. Meanwhile, the processing maps of the Waspaloy for the power dissipation and the flow instability were constructed. The processing map of the power dissipation and the flow instability depicts that the strain plays a major role in the processing maps. The instability zone is prone to appear at higher strain rates with the increasing strains. According to the instability processing map, there are three unsafe regimes around 1040-1120 degrees C/1.5-10 s(-1), 1040-1080 degrees C/0.02-0.1 s(-1) and 1110-1120 degrees C/0.02-0.3 s(-1) that should be avoided during deformation process. The power dissipation maps show that the maximum dissipation is prone to appear at low strain rates (0.01 s(-1)) when the strain is about 0.1 similar to 0.6 while at middle strain rates (0.1-1 s(-1)) when the strain is over 0.6, and when the true strain is 0.9, the optimum processing condition is around 1060-1120 degrees C/0.1-1 s(-1). The dynamic microstructures under different temperatures and strain rates were also obtained. We concluded that lower strain rates and higher temperatures are more applicable to obtain fully-recrystallized microstructures. Based on the instability maps and the power dissipation maps and the dynamic microstructures, the optimum deformation conditions are determined to be around 1080-1100 degrees C/0.1-1 s(-1) and 1040-1120 degrees C/0.01 s(-1).
引用
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页数:14
相关论文
共 38 条
  • [1] Attallah MM, 2012, WOODHEAD PUBL MATER, P25
  • [2] Banerjee, 2016, NICKEL BASED SUPERAL
  • [3] Evolution of flow stress and microstructure during isothermal compression of Waspaloy
    Chamanfar, A.
    Jahazi, M.
    Gholipour, J.
    Wanjara, P.
    Yue, S.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 615 : 497 - 510
  • [4] Maximizing the integrity of linear friction welded Waspaloy
    Chamanfar, A.
    Jahazi, M.
    Gholipour, J.
    Wanjara, P.
    Yue, S.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 555 : 117 - 130
  • [5] Effect of γ′ content on the mechanical behavior of the WASPALOY alloy system
    Chang, KM
    Liu, XB
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 308 (1-2): : 1 - 8
  • [6] Metadynamic recrystallization behavior and workability characteristics of HR3C austenitic heat-resistant stainless steel with processing map
    Cheng, Yang
    Du, Huayun
    Wei, Yinghui
    Hou, Lifeng
    Liu, Baosheng
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2016, 235 : 134 - 142
  • [7] Optimization of spinning process parameters for long thin-walled cylinder of TC11 alloy based on processing map
    Chi, Jiaxuan
    Cai, Zhongyi
    Li, Linlin
    [J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2018, 97 (5-8) : 1961 - 1969
  • [8] Flow softening and dynamic recrystallization behavior of BT9 titanium alloy: A study using process map development
    Ghasemi, E.
    Zarei-Hanzaki, A.
    Farabi, E.
    Tesar, K.
    Jager, A.
    Rezaee, M.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 695 : 1706 - 1718
  • [9] Processing map of as-cast 7075 aluminum alloy for hot working
    Guo Lianggang
    Yang Shuang
    Yang He
    Zhang Jun
    [J]. CHINESE JOURNAL OF AERONAUTICS, 2015, 28 (06) : 1774 - 1783
  • [10] Hot deformation and processing maps of Inconel 690 superalloy
    Guo, Shengli
    Li, Defu
    Pen, Haijia
    Guo, Qingmiao
    Hu, Jie
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2011, 410 (1-3) : 52 - 58