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高强高机械阻尼的W/NiTi(Nb)形状记忆合金复合材料 被引量:3

W/NiTi(Nb) Shape Memory Alloy Composite With High Strength and High Mechanical Damping
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摘要 通过真空感应熔炼、锻造及拔丝工艺制备了成分源于Ni48Ti46Nb3W3(原子分数)的W/NiTi(Nb)形状记忆合金原位自生复合材料,采用X射线衍射仪、扫描电镜、能谱仪及拉伸试验机研究了其微观组织结构与力学性能。结果表明:复合材料丝材中w呈横截面为片状的亚微米级纤维,且沿丝轴向均匀分布在NiTi(Nb)基体中,两组元界面结合良好;该复合材料丝材在室温下平台应力达1.2GPa,并呈现高机械阻尼性能。 An in situ W/NiTi(Nb) shape memory alloy composite with a nominal composition of Ni48 Ti46 Nb3W3 (at. ~) was fabricated by vacuum induction melting, forging and drawing. X-ray diffraction, scanning electron mi- croscope and energy dispersive spectroscopy were employed to analyze the microstructures and tensile testing ma- chine used to investigate the mechanical properties. It is revealed that the microstructure of the composite wire con- sists of tungsten submicro fibers well dispersed in the TiNi(Nb) matrix and aligned along the wire axial direction, with well-bonded interfaces. The composite wire exhibits high plateau stress up to 1.2 GPa and high mechanical damping capacity at room temperature.
作者 王珊 于存 郝世杰 郭方敏 余梦莹 姜大强 崔立山 WANG Shan, YU Cun, HAO Shi-jie, GUO Fang-rain, YU Meng-ying, JIANG Da-qiang, CUI Li-shan (Department of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China)
出处 《金属功能材料》 2014年第1期1-4,共4页 Metallic Functional Materials
基金 国家自然科学重点基金(51231008)
关键词 复合材料 NITI记忆合金 增强 机械阻尼 composites NiTi shape memory alloys strengthen mechanical damping
作者简介 王珊(1988-),女,博士;E-mail:shanwang88@126.com; 通讯作者:崔立山(1963-),男,博士,教授;E-mail:lishancui63@126.com
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