Effects of microstructure and γ′ distribution on the hot deformation behavior for a powder metallurgy superalloy FGH96

2014 ◽  
Vol 29 (23) ◽  
pp. 2799-2808 ◽  
Author(s):  
Chi Zhang ◽  
Liwen Zhang ◽  
Mengfei Li ◽  
Wenfei Shen ◽  
Sendong Gu
Keyword(s):  
Powder Metallurgy ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Image Position

Abstract

The hot deformation behavior and processing map of powder metallurgy NiAl-based alloy

2016 ◽  
Vol 31 (19) ◽  
pp. 2964-2976 ◽  
Author(s):  
Zhenhan Huang ◽  
Zhen Lu ◽  
Shaosong Jiang ◽  
Kaifeng Zhang
Keyword(s):  
Powder Metallurgy ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Processing Map ◽  
Hot Deformation Behavior ◽  
Image Position

Abstract

Hot deformation behavior and microstructural evolution of Mg–Zn–Ca–La alloys

2018 ◽  
Vol 33 (18) ◽  
pp. 2817-2826 ◽  
Author(s):  
Jiqiang Qi ◽  
Yuzhou Du ◽  
Bailing Jiang ◽  
Mingjie Shen
Keyword(s):  
Microstructural Evolution ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Image Position

Abstract

Hot deformation behavior and processing maps of Ti–6Al–4V alloy with starting fully lamellar structure

2018 ◽  
Vol 33 (22) ◽  
pp. 3677-3688 ◽  
Author(s):  
Wenjing Zhang ◽  
Hua Ding ◽  
Jingwei Zhao ◽  
Bo Yang ◽  
Wenjing Yang
Keyword(s):  
Hot Deformation ◽  
Deformation Behavior ◽  
Lamellar Structure ◽  
Processing Maps ◽  
Hot Deformation Behavior ◽  
Image Position ◽  
Fully Lamellar

Abstract

scholarly journals The analysis of hot deformation behavior of powder metallurgy Ti-10V-2Fe-3Al alloy using activation energy and Zener-Hollomon parameter

2020 ◽  
Vol 50 ◽  
pp. 546-551
Author(s):  
Krystian Zyguła ◽  
Marek Wojtaszek ◽  
Tomasz Śleboda ◽  
Oleksandr Lypchanskyi ◽  
Maciej Rumiński ◽  
...  
Keyword(s):  
Activation Energy ◽  
Powder Metallurgy ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Hollomon Parameter

Hot deformation behavior of a ferritic stainless steel stabilized with Nb during hot rolling simulation at different temperature ranges

2016 ◽  
Vol 31 (5) ◽  
pp. 635-645 ◽  
Author(s):  
Flávia Vieira Braga ◽  
Diana Pérez Escobar ◽  
Nilton José Lucinda de Oliveira ◽  
Margareth Spangler Andrade
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Hot Rolling ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Temperature Ranges ◽  
Image Position

Abstract

Hot deformation behavior and dynamic recrystallization constitutive modeling of Al–Cu–Mg powder compacts processed by extrusion at elevated temperatures

2020 ◽  
pp. 146442072097132
Author(s):  
Katti Bharath ◽  
Asit Kumar Khanra ◽  
MJ Davidson
Keyword(s):  
Powder Metallurgy ◽  
Flow Stress ◽  
Dynamic Recrystallization ◽  
Strain Rate ◽  
Relative Density ◽  
Constitutive Equations ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Peak Flow ◽  
Hot Deformation Behavior

The deformation behavior of Al–Cu–Mg sintered preforms has been investigated by extrusion in the temperature range of 450–550°C and strain rate range of 0.1–0.3 s−1, respectively. The aim of this study is to analyze the effect of initial preform relative density on the hot deformation behavior and to model and predict the flow stress of extruded samples using constitutive equations. The true stress–strain curves exhibit three stages of deformation, which represent work hardening, dynamic recovery, and dynamic recrystallization during deformation at different temperatures, strain rates, and initial preform relative densities of 70%, 80%, and 90%, respectively. The results show that the flow stress values are influenced by initial preform relative density, deformation temperature, and strain rate. Microstructural examination of extruded specimens has been performed by optical microscopy and scanning electron microscopy. Arrhenius-type constitutive equations are developed to predict the flow stress of hot-extruded powder metallurgy processed aluminum alloy (Al–4%Cu–0.5%Mg). Zener–Hollomon parameter is used to explain the relationship between peak flow stress, temperature, and strain rate in an exponential equation containing the deformation activation energy and material constants. Subsequently, the statistical indicators correlation coefficient ( R) and the average absolute relative error are assessed to confirm the validity of constitutive equations. The results indicate the experimental and predicted peak flow stress values are in good agreement, which indicate the accuracy and reliability of the developed model for powder metallurgy processed Al–4%Cu–0.5%Mg preforms.

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