Texture development during hot deformation of Al/Mg alloy reinforced with ceramic particles

JOURNAL OF ALLOYS AND COMPOUNDS

卷:798

Article

Rezayat, M.^1,2  Parsa, M. H.^3,4  Mirzadeh, H.³  Cabrera, J. M.² 

[1] Sahand Univ Technol, Dept Mat Engn, POB 51335-1996, Tabriz, Iran

[2] Univ Politecn Cataluna, Dept Ciencia Mat & Ingn Met, EEBE, C Eduard Maristany 10-14, Barcelona 08019, Spain

[3] Univ Tehran, Coll Engn, Sch Met & Mat Engn, POB 11155-4563, Tehran, Iran

[4] Univ Tehran, Ctr Excellence High Performance Mat, Sch Met & Mat Engn, Tehran, Iran

关键词: Al-Mg alloy;    Texture;    Hot deformation;    Metal matrix composite;    Texture softening;   

DOI  :  10.1016/j.jallcom.2019.05.233

来源: Elsevier

【 摘 要 】

Al-3Mg alloy reinforced with B4C particles in volume fractions of 5, 10 and 15% were subjected to hot deformation to investigate the impact of presence of ceramic particles and deformation condition on final texture. Single-heat hot compression test was performed at temperatures of 300-500 degrees C with strain rates of 10(-3) to 10 s(-1). The electron backscatter diffraction method was applied to evaluate the final texture and microstructures. It was observed that the {110} fiber formed during deformation was intensified by increasing the Zenner-Holloman parameter, while deformation at lower Z makes {100} fiber pervasive throughout the matrix. Developing {100} fiber in such condition leads to continual softening of flow stress. Presence of particles by promoting particle stimulating nucleation mechanism at high Z and restricting grains rotation at low Z led to lower final texture intensity. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

Free