Shape Memory Effect, Thermal Expansion and Damping Property of Friction Stir Processed NiTip/Al Composite

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• 作者：D.R. Ni¹ ; J.J. Wang¹ ; ² ; Z.Y. Ma¹ ; ^{zyma@imr.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Metal matrix composite ; Shape memory alloy ; Interface ; Differential scanning calorimetry (DSC) ; Damping
• 刊名：Journal of Materials Science & Technology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：32
• 期：2
• 页码：162-166
• 全文大小：1335 K

文摘

NiTi particles reinforced aluminum (NiTip/Al) composite was prepared via friction stir processing, eliminating interfacial reaction and/or elemental diffusion. The NiTip in the composite maintained the intrinsic characteristic of a reversible thermoelastic phase transformation even after heat-treatment. The shape memory characteristic of the NiTip decreased the coefficient of thermal expansion of the Al matrix, and an apparent two-way shape memory effect was observed in the composite. The composite owned a good combination of adjustable damping and thermal physical properties.