Microstructure design of the excellent shape recovery properties in (Ti,Hf)2Ni/Ti-Ni-Hf high temperature shape memory alloy composite

Xiaoyang Yi; Kuishan Sun; Weihong Gao; Xianglong Meng; Wei Cai; Liancheng Zhao

doi:10.1016/j.jallcom.2017.09.242

Microstructure design of the excellent shape recovery properties in (Ti,Hf)₂Ni/Ti-Ni-Hf high temperature shape memory alloy composite

Xiaoyang Yi
, Kuishan Sun
, Weihong Gao
, Xianglong Meng^*
, Wei Cai
, Liancheng Zhao

^*Corresponding author for this work

Harbin Institute of Technology
Guangdong University of Technology

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The microstructure, martensitic transformation behaviors, mechanical and shape recovery properties of the (Ti,Hf)₂Ni/Ti-Ni-Hf composite fabricated by SPS were investigated. The microstructure of the (Ti,Hf)₂Ni/Ti-Ni-Hf composite consisted of B19′ martensite matrix interspersed with (Ti,Hf)₂Ni phases. The larger (Ti,Hf)₂Ni phases distributed at the surface of the original alloy powders and formed network structure, while the fine (Ti,Hf)₂Ni phases was also observed in the interior of the original alloy powders. The distribution and the amount of the (Ti,Hf)₂Ni phases contributed to the lower transformation temperatures of the (Ti,Hf)₂Ni/Ti-Ni-Hf composite. In addition, the strengthening of larger (Ti,Hf)₂Ni phases with the network structure at the macro level and precipitation strengthening of fine (Ti,Hf)₂Ni phases at the micro level played an important role in the better mechanical and shape recovery properties in the sintered Ti-Ni-Hf composite.

Original language	English
Pages (from-to)	758-763
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	729
DOIs	https://doi.org/10.1016/j.jallcom.2017.09.242
State	Published - 2017
Externally published	Yes

Keywords

High temperature shape memory alloy
Martensitic transformation
Network microstructure
Shape recovery properties
Ti-Ni-Hf composite

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10.1016/j.jallcom.2017.09.242

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@article{840f17ca8a194bcd9a28aba4e605f79f,

title = "Microstructure design of the excellent shape recovery properties in (Ti,Hf)2Ni/Ti-Ni-Hf high temperature shape memory alloy composite",

abstract = "The microstructure, martensitic transformation behaviors, mechanical and shape recovery properties of the (Ti,Hf)2Ni/Ti-Ni-Hf composite fabricated by SPS were investigated. The microstructure of the (Ti,Hf)2Ni/Ti-Ni-Hf composite consisted of B19′ martensite matrix interspersed with (Ti,Hf)2Ni phases. The larger (Ti,Hf)2Ni phases distributed at the surface of the original alloy powders and formed network structure, while the fine (Ti,Hf)2Ni phases was also observed in the interior of the original alloy powders. The distribution and the amount of the (Ti,Hf)2Ni phases contributed to the lower transformation temperatures of the (Ti,Hf)2Ni/Ti-Ni-Hf composite. In addition, the strengthening of larger (Ti,Hf)2Ni phases with the network structure at the macro level and precipitation strengthening of fine (Ti,Hf)2Ni phases at the micro level played an important role in the better mechanical and shape recovery properties in the sintered Ti-Ni-Hf composite.",

keywords = "High temperature shape memory alloy, Martensitic transformation, Network microstructure, Shape recovery properties, Ti-Ni-Hf composite",

author = "Xiaoyang Yi and Kuishan Sun and Weihong Gao and Xianglong Meng and Wei Cai and Liancheng Zhao",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

doi = "10.1016/j.jallcom.2017.09.242",

language = "英语",

volume = "729",

pages = "758--763",

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TY - JOUR

T1 - Microstructure design of the excellent shape recovery properties in (Ti,Hf)2Ni/Ti-Ni-Hf high temperature shape memory alloy composite

AU - Yi, Xiaoyang

AU - Sun, Kuishan

AU - Gao, Weihong

AU - Meng, Xianglong

AU - Cai, Wei

AU - Zhao, Liancheng

PY - 2017

Y1 - 2017

N2 - The microstructure, martensitic transformation behaviors, mechanical and shape recovery properties of the (Ti,Hf)2Ni/Ti-Ni-Hf composite fabricated by SPS were investigated. The microstructure of the (Ti,Hf)2Ni/Ti-Ni-Hf composite consisted of B19′ martensite matrix interspersed with (Ti,Hf)2Ni phases. The larger (Ti,Hf)2Ni phases distributed at the surface of the original alloy powders and formed network structure, while the fine (Ti,Hf)2Ni phases was also observed in the interior of the original alloy powders. The distribution and the amount of the (Ti,Hf)2Ni phases contributed to the lower transformation temperatures of the (Ti,Hf)2Ni/Ti-Ni-Hf composite. In addition, the strengthening of larger (Ti,Hf)2Ni phases with the network structure at the macro level and precipitation strengthening of fine (Ti,Hf)2Ni phases at the micro level played an important role in the better mechanical and shape recovery properties in the sintered Ti-Ni-Hf composite.

AB - The microstructure, martensitic transformation behaviors, mechanical and shape recovery properties of the (Ti,Hf)2Ni/Ti-Ni-Hf composite fabricated by SPS were investigated. The microstructure of the (Ti,Hf)2Ni/Ti-Ni-Hf composite consisted of B19′ martensite matrix interspersed with (Ti,Hf)2Ni phases. The larger (Ti,Hf)2Ni phases distributed at the surface of the original alloy powders and formed network structure, while the fine (Ti,Hf)2Ni phases was also observed in the interior of the original alloy powders. The distribution and the amount of the (Ti,Hf)2Ni phases contributed to the lower transformation temperatures of the (Ti,Hf)2Ni/Ti-Ni-Hf composite. In addition, the strengthening of larger (Ti,Hf)2Ni phases with the network structure at the macro level and precipitation strengthening of fine (Ti,Hf)2Ni phases at the micro level played an important role in the better mechanical and shape recovery properties in the sintered Ti-Ni-Hf composite.

KW - High temperature shape memory alloy

KW - Martensitic transformation

KW - Network microstructure

KW - Shape recovery properties

KW - Ti-Ni-Hf composite

UR - https://www.scopus.com/pages/publications/85029825600

U2 - 10.1016/j.jallcom.2017.09.242

DO - 10.1016/j.jallcom.2017.09.242

M3 - 文章

AN - SCOPUS:85029825600

SN - 0925-8388

VL - 729

SP - 758

EP - 763

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Microstructure design of the excellent shape recovery properties in (Ti,Hf)₂Ni/Ti-Ni-Hf high temperature shape memory alloy composite

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