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：119

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

页码：1941 / 1950

页数：10

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