Microstructure and Mechanical Properties of NiTi<sub>2</sub>-TiB Composite Fabricated by Spark Plasma Sintering
Microstructure and Mechanical Properties of NiTi<sub>2</sub>-TiB Composite Fabricated by Spark Plasma Sintering作者机构：Department of Mechanical Engineering Ube National College of Technology Ube Yamaguchi 755-8555 Japan
出 版 物：《World Journal of Engineering and Technology》 (世界工程和技术（英文）)
年 卷 期：2015年第3卷第3期
页 面：84-88页
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：Composite Bending Strength Vickers Hardness TiB NiTi2
摘 要：Composites of NiTi2-TiB have been fabricated using spark plasma sintering and mechanical properties have been investigated. Dense specimens of monolithic NiTi2 have been obtained by the sintering at 950?C. By the x-ray diffraction measurements it has been shown that NiTi2 co-exists with TiB in equilibrium at 950?C. The bending strength of NiTi2-TiB composite increases with increasing the volume fraction of TiB2 up to 60 vol%. The maximum bending strength of 730 MPa has been obtained for NiTi2-60vol% TiB2. The Vickers hardness also increases with increasing the volume fraction of TiB up to 70% and the highest Vickers hardness of 1620 Hv has been obtained for NiTi2-70%TiB.
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