Effects and mechanisms of grain refinement in aluminium alloys

Bulletin of materials science

T Chandrashekar¹  K T Kashyap² 

[1] Department of Mechanical Engineering, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India$$Department of Mechanical Engineering, M.S. Ramaiah Institute of Technology, Bangalore 560 054, IndiaDepartment of Mechanical Engineering, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India$$;Central Laboratory, Foundry and Forge Division, Hindustan Aeronautics Ltd., Bangalore 560 017, India$$Central Laboratory, Foundry and Forge Division, Hindustan Aeronautics Ltd., Bangalore 560 017, IndiaCentral Laboratory, Foundry and Forge Division, Hindustan Aeronautics Ltd., Bangalore 560 017, India$$

关键词: Grain refinement;    nucleant effects;    solute effects;    Alâ€�?�Tiâ€�?�B master alloy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Grain refinement plays a crucial role in improving characteristics and properties of cast and wrought aluminium alloys. Generally Al�?�Ti and Al�?�Ti�?�B master alloys are added to the aluminium alloys to grain refine the solidified product. The mechanism of grain refinement is of considerable controversy in the scientific literature. The nucleant effects i.e. which particle and its characteristics nucleate �?-Al, has been the subject of intensive research. Lately the solute effect i.e. the effect of dissolved titanium on grain refinement, has come into forefront of grain refinement research. The present paper attempts to review the literature on the nucleant effects and solute effects on grain refinement and addresses the importance of dissolved titanium in promoting nucleation of �?-Al on nucleant particles.

【 授权许可】

Unknown