Effect of cooling rate on microstructure and deformation behavior of Ti-based metallic glassy/crystalline powders

被引：12
作者：
Wang, D. J. [1 ,2 ]
Huang, Y. J. [1 ]
Shen, J. [1 ]
Wu, Y. Q. [2 ]
Huang, H. [2 ]
Zou, J. [2 ,3 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China
[2] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 21-22期
关键词：
Glass; Powder metallurgy; Rapid solidification; Plasticity; Nanoindentation; GLASS MATRIX COMPOSITES; MECHANICAL-PROPERTIES; TENSILE DUCTILITY; AMORPHOUS-ALLOYS; PHASE-SEPARATION; ZR; PLASTICITY;
D O I：
10.1016/j.msea.2010.06.019
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructures and deformation behavior of Ti-based metallic powders were comprehensively investigated. It has been found that, with increasing the powder size, the phase constituent alters from pure glassy to glassy with crystalline phases (face centered cubic structured NiSnZr and hexagonal structured Ti3Sn phases). Our results suggest that the synergetic effect of the thermodynamics and kinetics determines the subsequent characteristics of the crystalline precipitations. Through comparative nanoindentation tests, it was found that the small powders exhibit more pop-in events and a larger pile-up ratio, suggesting that the plastic deformation of the metallic powders is governed by the combined effects of the free volume and the crystallization, which are determined by the cooling rate. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：5750 / 5754
页数：5
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