Damping behaviors and strain recovery characteristics of Hf-modified TiNb-based shape memory alloys

Yi, Xiaoyang; Huang, Bowen; Gao, Weihong; Sun, Bin; Feng, Xinxin; Cao, Xinjian; Guo, Yangming; Meng, Xianglong; Gao, Zhiyong; Wang, Haizhen

doi:10.1016/j.materresbull.2022.112084

Cited by 7 publications

(1 citation statement)

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“…Polymer materials exhibit excellent damping properties due to viscoelasticity, but owing to their low mechanical properties they cannot be directly used as structural components in engineering fields [ 1 ]. Although traditional metal materials have excellent mechanical properties, their applications are also limited due to their low damping properties [ 2 , 3 ]. SMAs exhibit high damping properties owing to their inherent thermoelastic martensitic transformation (MT) behavior and the hysteretic migration of a large number of interfaces such as the austenite/martensite interface, the twin interface as well as the martensite/martensite interface, so they have been widely used [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nb on the Damping Property and Pseudoelasticity of a Porous Ni-Ti Shape Memory Alloy

et al. 2023

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In order to develop novel high damping materials with excellent pseudoelasticity (PE) properties to meet the application requirements in aerospace, medical, military and other fields, porous Ni50.8Ti49.2 shape memory alloy (SMA) was prepared by the powder metallurgy method. Different contents of Nb element were added to regulate the microstructures. It was found that after adding the Nb element, the number of precipitates significantly decreased, and the Nb element was mainly distributed in the Ni-Ti matrix in the form of β-Nb blocks surrounded by Nb-rich layers. Property tests showed that with the increase in Nb content, the damping and PE increased first and then decreased. When the Nb content reached 9.0 at.%, the highest damping and the best PE could be achieved. Compared with the porous Ni-Ti SMA without Nb addition, the damping and PE increased by 60% and 35%, respectively. Correlated mechanisms were discussed.

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