Comparative study of microstructures and mechanical properties of in situ Ti-TiB composites produced by selective laser melting, powder metallurgy, and casting technologies

被引：115
|
作者：
Attar, H. [1 ,2 ]
Boenisch, M. [2 ]
Calin, M. [2 ]
Zhang, L. C. [1 ]
Zhuravleva, K. [2 ,3 ]
Funk, A. [2 ,3 ]
Scudino, S. [2 ]
Yang, C. [4 ]
Eckert, J. [2 ,3 ]
机构：
[1] Edith Cowan Univ, Sch Engn, Perth, WA 6027, Australia
[2] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany
[3] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
[4] S China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Metall M, Guangzhou 510640, Guangdong, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2014年 / 29卷 / 17期
基金：
澳大利亚研究理事会;
关键词：
TITANIUM-MATRIX; WEAR PERFORMANCE; GROWTH-MECHANISM; BEHAVIOR; DENSIFICATION; TEMPERATURE; MANUFACTURE; EVOLUTION; MODULUS; ALLOYS;
D O I：
10.1557/jmr.2014.122
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study presents results of selective laser melting (SLM), powder metallurgy (PM), and casting technologies applied for producing Ti-TiB composites from Ti-TiB2 powder. Diffraction patterns and microstructural investigations reveal that chemical reaction occurred between Ti and TiB2 during all the three processes, leading to the formation of Ti-TiB composites. The ultimate compressive strength of SLM-processed and cast samples are 1421 and 1434 MPa, respectively, whereas the ultimate compressive strengths of PM-processed 25%, 29%, and 36% porous samples are 510, 414, and 310 MPa, respectively. The Young's moduli of porous composite samples are 70, 45, and 23 GPa for 25%, 29%, and 36% porosity levels, respectively, and are lower than those of SLM-processed (145 GPa) and cast (142 GPa) samples. Fracture analysis of the SLM-processed and cast samples shows shear fracture and microcracks across the samples, whereas failure of porous samples occurs due to porosities and weak bonds among particles.
引用
收藏
页码：1941 / 1950
页数：10
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