The effects of nanosized particles on microstructural evolution of an in-situ TiB2/6063Al composite produced by friction stir processing

被引：67

作者：

Chen, Z. ^{[1
]}

Li, J. ^{[2
]}

Borbely, A. ^{[3
]}

Ji, G. ^{[4
]}

Zhong, S. Y. ^{[1
]}

Wu, Y. ^{[1
]}

Wang, M. L. ^{[5
]}

Wang, H. W. ^{[1
,5
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China

[3] Ecole Natl Super Mines, SMS Mat Ctr, CNRS UMR 5146, F-42023 St Etienne, France

[4] Univ Lille 1, Unite Mat & Transformat, CNRS UMR 8207, F-59655 Villeneuve Dascq, France

[5] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

来源：

MATERIALS & DESIGN | 2015年 / 88卷

基金：

中国国家自然科学基金;

关键词：

Metal-matrix composites (MMCs); X-ray diffraction (XRD); Transmission electron microscopy (TEM); Neutron diffraction; Friction stir processing; MECHANICAL-PROPERTIES; DISLOCATION DENSITY; GRAIN-REFINEMENT; ALUMINUM-ALLOYS; TIB2; PARTICLES; DEFORMATION; STRENGTH; SIZE;

D O I：

10.1016/j.matdes.2015.09.127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The homogenous redistribution of nanosized TiB2 particles in a fine-grained in-situ AA6063/TiB2 composite has been achievedby friction stir processing (FSP). The effects of TiB2 particles on as-deformed structure in the nugget zone and its thermal stability after additional T6 heat treatment are quantitatively evaluated by using neutron diffraction, scanning electron microscopy associated with electron backscatter diffraction and synchrotron X-ray line profile analysis. The results are compared to those obtained from a FSPed AA6063 alloy and, show first that, average grain size of the FSPedAA6063/TiB2 composite is smaller than that of the FSPed AA6063 alloy, while grain size distribution is more uniform. Second, dislocation density estimated in the FSPed AA6063/TiB2 composite is higher than that in the FSPed AA6063 alloy. Third, a small number of grains are dynamically recrystallized in the FSPed AA6063/TiB2 composite compared to its alloy counterpart, which indicates that recrystallization and grain growth during FSP and T6 heat treatment are effectively inhibited by the presence of nanosized TiB2 particles. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：999 / 1007

页数：9

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