Hardness - Yield Strength Relation of Al-Mg-Si Alloys

7th National Conference on Processing and Characterization of Materials

Sekhar, Aluru Praveen^1 ; Nandy, Supriya^1 ; Kumar Ray, Kalyan^1 ; Das, Debdulal^1

Department of Metallurgy and Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, West Bengal

711103, India^1

关键词: Ageing response;    Al-Mg-Si alloys;    Dislocation accumulation;    Indentation hardness;    Mechanical properties of materials;    Si alloys;    Time duration;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012011/pdf
DOI  :  10.1088/1757-899X/338/1/012011

来源: IOP

【 摘 要 】

Assessing the mechanical properties of materials through indentation hardness test is an attractive method, rather than obtaining the properties through destructive approach like tensile testing. The present work emphasizes on the relation between hardness and yield strength of Al-Mg-Si alloys considering Tabor type equations. Al-0.5Mg-0.4Si alloy has been artificially aged at various temperatures (100 to 250 °C) for different time durations (0.083 to 1000 h) and the ageing response has been assessed by measuring the Vickers hardness and yield strength. Correlations of the existing data from the open literature have also been reviewed. Lastly, it has been explained that the deviation in obtained relation from Tabor's equation is owing to the dislocation accumulation during indentation.