材料科学技术(英文版)2021，Vol.71Issue(12) ：163-168.

Grain-size gradient NiTi ribbons with multiple-step shape transition prepared by melt-spinning

Xiangguang Kong Ying Yang Shiyu Guo Ran Li Bo Feng Daqiang Jiang Meng Li Changfeng Chen Lishan Cui Shijie Hao
材料科学技术(英文版)2021，Vol.71Issue(12) ：163-168.
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Grain-size gradient NiTi ribbons with multiple-step shape transition prepared by melt-spinning

Xiangguang Kong 1Ying Yang 1Shiyu Guo 1Ran Li 2Bo Feng 1Daqiang Jiang 1Meng Li 3Changfeng Chen 4Lishan Cui 1Shijie Hao5
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作者信息

  • 1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
  • 2. Key Laboratory of Aerospace Materials and Performance, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
  • 3. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Youyi Street No.104, Haidian, Beijing, 100094, China
  • 4. Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum Beijing, Beijing, 102249, China
  • 5. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China;Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum Beijing, Beijing, 102249, China
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Abstract

A grain-size gradient NiTi ribbon with multiple-step shape transition was papered by means of melt-spinning.The ribbons contain coarse and fine grains in the free surface side and copper roller surface side,respectively.The grain-size gradient microstructure induces a two-stage phase transformation behavior in the ribbons during heating or cooling.After tensile deformation pre-treatment,the ribbons exhibit a back-and-forth shape change (shape A→ B-A) upon a single heating or cooling process,resulting from the sequential phase transformation through the thickness of the ribbon as dictated by gradient grain size.The activating performance of the ribbons,i.e.shape transition amplitude and speed,can be customized by controlling the pre-deformation strain.This work offers a new opportunity for innovative designs to reach a novel shape memory behavior in NiTi alloys conveniently and efficiently.

Key words

NiTi shape memory alloy/Melt spinning/Shape memory effect/Martensitic transformation

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基金项目

National Key Research and Development Program of China(2018YFB1105100)

国家自然科学基金(51971244)

国家自然科学基金(51731010)

国家自然科学基金(1637207)

Science Foundation of China University of Petroleum,Beijing(2462018BJC005)

Pre-research Program of Frontier Science,and Ministry of Education(6141A020222)

出版年

2021
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量36
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