Empirical Relationship between Hardness and Tensile Properties of High Pressure Torsion-processed Al 6061

International Conference on Process Engineering and Advanced Materials 2018

Lamin, Fauziana^1,2 ; Ariffin, Ahmad Kamal^1 ; Mohamed, Intan Fadhlina^1

Mechanical and Materials Engineering Department, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor

43600, Malaysia^1

Vehicle Safety and Biomechanics Research Centre, Malaysian Institute of Road Safety Research, Lot 125-135, Jalan TKS 1, Taman Kajang Sentral, Selangor, Kajang

43000, Malaysia^2

关键词: Advanced materials;    Behaviour controls;    Destructive tests;    Empirical relationships;    High pressure torsions;    Linear correlation;    Strength property;    Ultimate tensile strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/458/1/012081/pdf
DOI  :  10.1088/1757-899X/458/1/012081

来源: IOP

【 摘 要 】

Improved strength is the ultimate goal of advanced material processing technique, including high-pressure torsion (HPT). To evaluate this goal, it requires determination of strength properties of the processed sample. While tensile test involves destructive test procedures, hardness is a closely related mechanical property in evaluating strength. This illustrates the need for a reliable hardness-tensile properties relationship. This paper determined an empirical relationship between hardness and several tensile properties i.e. ultimate tensile strength, Young modulus and tangent modulus, of HPT-processed Al 6061 samples. As results, an acceptable linear correlation for each property was obtained with a unique relationship. The degree of agreement between the studied properties and hardness was discussed. With recent advanced in computational method, the derived empirical relationships could optimise the HPT processing and aid the sample behaviour control and prediction.