Effect of subgrain and the associated DRX behaviour on the texture modification of Mg-6.63Zn-0.56Zr alloy during hot tensile deformation

2021 ◽  
pp. 141745
Author(s):  
Jingyuan Shen ◽  
Lingyu Zhang ◽  
Lianxi Hu ◽  
Yu Sun ◽  
Fei Gao ◽  
...  
Keyword(s):  
Tensile Deformation ◽  
Texture Modification ◽  
Hot Tensile Deformation

A Numerical and Experimental Study of Cavitation in a Hot Tensile Axisymmetric Testpiece

2005 ◽  
Vol 40 (6) ◽  
pp. 571-586 ◽  
Author(s):  
Y Liu ◽  
J Lin ◽  
T. A Dean ◽  
D. C. J Farrugia
Keyword(s):  
Experimental Study ◽  
Flow Stress ◽  
Grain Boundary ◽  
Thermal Gradient ◽  
Tensile Testing ◽  
Tensile Deformation ◽  
Strain Rates ◽  
Test Results ◽  
Integrated Technique ◽  
Hot Tensile Deformation

During axisymmetric hot tensile testing, necking normally takes place due to the thermal gradient and the accumulation of microdamage. This paper introduces an integrated technique to predict the damage and necking evolution behaviour. Firstly, a set of multiaxial mechanism-based unified viscoplastic-damage constitutive equations is presented. This equation set, which models the evolution of grain boundary (intragranular) and plasticity-induced (intergranular) damage, is determined for a free-cutting steel tested over a range of temperatures and strain rates on a Gleeble thermomechanical simulator. This model has been implemented using the CREEP subroutine of the commercial finite element (FE) solver ABAQUS. Numerical procedures to simulate axisymmetric hot tensile deformation are developed with consideration of the thermal gradient along the axis of the tensile testpiece. FE simulations are carried out to reproduce the necking phenomenon and the evolution of plasticity-induced and grain boundary damage. The simulated results have been validated with experimental tensile test results. The effects of necking and its associated stress state on flow stress and ductility are investigated. The flow stress and ductility data obtained from a Gleeble material simulator under various hot deformation conditions have also been numerically studied.

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 tensile deformation behavior of extruded LAZ532 alloy with heterostructure

2021 ◽  
Vol 801 ◽  
pp. 140412 ◽  
Author(s):  
Xiaoqiang Li ◽  
Qichi Le ◽  
Dandan Li ◽  
Ping Wang ◽  
Peipeng Jin ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Tensile Deformation ◽  
Tensile Deformation Behavior ◽  
Hot Tensile Deformation

Hot Tensile Deformation Behaviors of an AISI 316LN Stainless Steel

2015 ◽  
Vol 817 ◽  
pp. 367-373
Author(s):  
Xiao Ya Yang ◽  
Xi Tao Wang ◽  
Gen Qi Wang
Keyword(s):  
Experimental Data ◽  
Stainless Steel ◽  
Strain Rate ◽  
Deformation Temperature ◽  
Tensile Deformation ◽  
Deformation Condition ◽  
Percentage Reduction ◽  
Deformation Behaviors ◽  
Hot Tensile Deformation ◽  
Reduction Of Area

The hot tensile deformation behaviors of 316LN austenitic stainless steel (ASS) were studied on a Gleeble-1500D thermal simulator under the deformation temperature of 1173-1473 K and strain rate of 0.01-1 s-1. The effects of deformation temperature and strain rate on hot deformation behaviors were analyzed. Based on experimental data, the constitutive equation was established, and the predicted peak stresses by the developed model agree well with the experimental data. Microstructure near the fracture and the percentage reduction of area were studied, and the results showed that the microstructural evolution has great influences on the percentage reduction of area. Under the deformation temperature of 1473K with the strain rate of 1s-1, the grain was the finest and most homogenous, and in this deformation condition the percentage reduction of area was the highest of 79.8%.

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