Micromechanical analysis of residual stress around coarse precipitates under cold rolling conditions

2021 ◽  
pp. 103841
Author(s):  
Sung-Jin Park ◽  
Shinji Muraishi
Keyword(s):  
Residual Stress ◽  
Cold Rolling ◽  
Micromechanical Analysis

scholarly journals A Model of Surface Residual Stress Distribution of Cold Rolling Spline

2017 ◽  
Vol 2017 ◽  
pp. 1-21 ◽  
Author(s):  
Z. H. Ding ◽  
F. K. Cui ◽  
Y. B. Liu ◽  
Y. Li ◽  
K. G. Xie
Keyword(s):  
Residual Stress ◽  
Cold Rolling ◽  
High Reliability ◽  
Processing Parameters ◽  
Multiple Regression Model ◽  
Tooth Profile ◽  
Contour Method ◽  
Forming Process ◽  
Surface Residual Stress ◽  
Cold Roll

Residual stress is an important parameter in the evaluation of the performance of a cold rolling spline surface. However, research on cold rolling spline is rare. To improve the surface property of a spline, an involute spline is selected as the object of this study. The contour method for determining cold roll-beating residual stress involves measuring the force spatial distribution, performing a statistical analysis of the experimental results, establishing the parameters for the tooth profile for different positions (dedendum, pitch, and addendum) of residual stress, and determining the effect of pressure on the relationship between stress and the depth of the cold roll-beating. A response surface method is used to establish the spline tooth profile of the dedendum, pitch, and addendum of the residual stress and different depths of the stress layer to obtain the parameters of a multiple regression model and perform a comparative analysis of the experimental and prediction results. Research indicates that the prediction results have high reliability. The establishment of this model has important guiding significance to control the residual stress in the cold roll-beating forming process, optimize the cold roll-beating processing parameters, and improve the surface properties of cold rolling spline.

The Residual Stress Research of Rolling Slab Based on the No-Linear Elastic and Plastic Analysis

2011 ◽  
Vol 311-313 ◽  
pp. 1093-1096
Author(s):  
Zhao Wei Dong ◽  
Xiao Hang Wan ◽  
Shu Jun Li ◽  
Sheng Yong Liu
Keyword(s):  
Residual Stress ◽  
Surface Layer ◽  
Cold Rolling ◽  
Tension Stress ◽  
Nonlinear Method ◽  
Elastic Plastic ◽  
Linear Elastic ◽  
Residual Tension ◽  
Plastic Analysis ◽  
Pressure Stress

The cold rolling of slab is analyzed by using elastic-plastic and heat-mechanic coupling FEM with the nonlinear method. The distribution of residual stress was analyzed mainly in this paper. It is indicated by the results that the residual stress in surface layer of slab material is the pressure stress and inside the plate is the tension stress under the smaller press quantity, the residual stress in surface layer is the tension stress and inside the slab is the pressure stress under bigger press quantity, the maximum residual tension stress in the slab becomes bigger with the increment of the reduction.

Effect of Residual Stress on Mechanical Property of Monolithic Bulk Metallic Glass

2010 ◽  
Vol 654-656 ◽  
pp. 1050-1053
Author(s):  
Min Ha Lee ◽  
Joong Hwan Jun ◽  
Jürgen Eckert
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Metallic Glass ◽  
Cold Rolling ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Metallic Materials ◽  
Cyclic Compression ◽  
Stress States ◽  
Intrinsic Plasticity

Mechanical treatments such as deep rolling are known to affect the strength and toughness of metallic glass due to the residual stress. It is well known that compressive residual stress states usually enhance the mechanical properties in conventional metallic materials. We present investigations on the change of fracture behavior related with mechanical properties of “brittle” bulk metallic glass by cold rolling at room temperature. Improvement of the intrinsic plasticity is observed not only after constrained cyclic compression but also after cold rolling. Moreover, neither nanocrystallization nor phase separation occurs during deformation. By these findings we provide a unique fundamental basis by considering the introduction of structural inhomogeneity and ductility improvement in metallic glasses. The experimental evidence clearly supports that such an inhomogeneous glassy can be produced by residual stress in well known “brittle” bulk metallic glasses, and does not depend on a specific pinpointed chemical composition.

scholarly journals Relationship between corrosion rate of 5083 aluminum alloy in alkaline solution and residual stress induced by cold rolling.

1994 ◽  
Vol 44 (2) ◽  
pp. 81-85
Author(s):  
Shu KURODA ◽  
Kazuaki OKUMURA ◽  
Tadakazu OHNISHI ◽  
Hiroyuki ICHINOSE ◽  
Nobuo KOBAYASHI
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Corrosion Rate ◽  
Cold Rolling ◽  
Alkaline Solution ◽  
5083 Aluminum Alloy
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