Hot workability and microstructure control in Monel®400 (Ni–30Cu) alloy: An approach using processing map, constitutive equation and deformation modeling

2021 ◽  
pp. 141855
Author(s):  
Niraj Nayan ◽  
Gaurav Singh ◽  
P.M. Souza ◽  
S.V.S Narayana Murty ◽  
M. Venkatesh ◽  
...  
Keyword(s):  
Constitutive Equation ◽  
Processing Map ◽  
Hot Workability ◽  
Microstructure Control

The Constitutive Model and Processing Map for In Situ 5wt% TiB2 Reinforced 7050 Al Alloy Matrix Composite

2013 ◽  
Vol 575-576 ◽  
pp. 11-19 ◽  
Author(s):  
Ming Liang Wang ◽  
Zhe Chen ◽  
Dong Chen ◽  
Yi Wu ◽  
Xian Feng Li ◽  
...  
Keyword(s):  
Flow Stress ◽  
Constitutive Equation ◽  
Constitutive Model ◽  
Strain Rate ◽  
Matrix Composite ◽  
Processing Map ◽  
Al Alloy ◽  
Hot Workability ◽  
Alloy Matrix

This study investigated the constitutive flow behavior and hot workability of in-situ 5wt% TiB2 reinforced 7050 Al alloy matrix composite by hot compression experiments. Based on the experimental results of flow curves, a constitutive model describing the relationship of the flow stress, true strain, strain rate and temperature is proposed. Substantially, it is found the constitutive equation of flow stress is dependent on the strain, strain rate and temperature. The coefficients (E.g., α, n, Q and lnA) in the equation are functions of true strains. The results of the calculated values from constitutive equation are verified to well agree with the experimental values. Furthermore, the processing map of the composite is created in order to determine the hot processing domains. The optimum zones for hot workability and instability regions are identified. In instability domain, the microstructures display the main failure modes as the particle cracking and interface debonding.

Hot tensile deformation constitutive equation and processing map of AZ61Ce magnesium alloy sheet

2019 ◽  
Vol 6 (4) ◽  
pp. 046521 ◽  
Author(s):  
Zhenxiong Wei ◽  
Zhongjun Wang ◽  
Jing Zhu ◽  
Weijuan Li ◽  
Hongbin Wang
Keyword(s):  
Magnesium Alloy ◽  
Constitutive Equation ◽  
Processing Map ◽  
Tensile Deformation ◽  
Alloy Sheet ◽  
Magnesium Alloy Sheet ◽  
Hot Tensile Deformation

Hot workability, constitutive model and processing map of 3Cr23Ni8Mn3N heat resistant steel

Vacuum ◽  
2019 ◽  
Vol 165 ◽  
pp. 324-336 ◽  
Author(s):  
Zhongman Cai ◽  
Hongchao Ji ◽  
Weichi Pei ◽  
Xuefeng Tang ◽  
Xiaomin Huang ◽  
...  
Keyword(s):  
Constitutive Model ◽  
Processing Map ◽  
Resistant Steel ◽  
Hot Workability ◽  
Heat Resistant Steel ◽  
Heat Resistant

scholarly journals Hot Deformation Behaviors of the Mg-3Sn-2Al-1Zn Alloy: Investigation on its Constitutive Equation, Processing Map, and Microstructure

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 312 ◽  
Author(s):  
Yuhang Guo ◽  
Yaodong Xuanyuan ◽  
Xuannam Ly ◽  
Sen Yang
Keyword(s):  
Constitutive Equation ◽  
Strain Rate ◽  
Processing Map ◽  
True Strain ◽  
Strain Rate Range ◽  
Hot Working ◽  
Microstructure Observation ◽  
Stability And Instability ◽  
Deformation Behaviors ◽  
Working Parameters

In this work, the Mg-3Sn-2Al-1Zn (TAZ321, wt. %) alloy with excellent high temperature resistance was compressed using a Gleeble-3500 thermo-mechanical simulator at a wide temperature and the strain rate range. The kinetics analyses showed that the dominant deformation mechanism was likely caused by the cross slipping of dislocations. A constitutive equation which expressed the relationship between the flow stress, deformation temperature, and strain rate was established, and the average activation energy Q was calculated to be 172.1 kJ/mol. In order to delineate the stability and instability working domains, as well as obtain the optimum hot working parameters of the alloy, the hot processing maps in accordance with Prassad’s criterion are constructed at the true strain of 0.2, 0.4, 0.6, and 0.8, respectively. Based on the hot processing map and microstructure observation, the optimum hot working parameter was determined to be 350 °C/1 s−1. The continuous fine dynamic recrystallization (CDRX) grains occurred in the optimum deformation zone. The predicted instability domains was identified as T = 200–300 °C, ε ˙ = 10−2–1 s−1, which corresponded to the microstructure of deformation twinning and micro cracks at the intersection of grain boundaries.

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