时效处理对Ni-Ti-Hf-Nb高温形状记忆合金相变热稳定性的影响

doi:10.13251/j.issn.0254-6051.2023.07.010

金属热处理 ›› 2023, Vol. 48 ›› Issue (7): 54-60.DOI: 10.13251/j.issn.0254-6051.2023.07.010

时效处理对Ni-Ti-Hf-Nb高温形状记忆合金相变热稳定性的影响

赵国简¹, 李昊原¹, 杨杰¹, 徐瑞瑶¹, 黄兴民^1,2, 金明江³

1.西南交通大学先进材料教育部重点实验室, 四川成都 610031;
2.西南交通大学材料科学与工程学院, 四川成都 610031;
3.上海交通大学材料科学与工程学院, 上海 200240

收稿日期:2022-12-21 修回日期:2023-05-11 出版日期:2023-07-25 发布日期:2023-09-04
通讯作者: 黄兴民,副教授,博士,E-mail: xmhuang@swjtu.cn
作者简介:赵国简(2001—),男,主要研究方向为高温记忆合金的相变热稳定性,E-mail:871109774@qq.com。
基金资助:
四川省科技计划(2020YFH0102)

Effect of aging treatment on phase transformation thermal stability of Ni-Ti-Hf-Nb high temperature shape memory alloy

Zhao Guojian¹, Li Haoyuan¹, Yang Jie¹, Xu Ruiyao¹, Huang Xingmin^1,2, Jin Mingjiang³

1. Advanced Materials Key Laboratory of Ministry of Education, Southwest Jiaotong University, Chengdu Sichuan 610031, China;
2. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China;
3. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2022-12-21 Revised:2023-05-11 Online:2023-07-25 Published:2023-09-04

摘要/Abstract

摘要： 结合差示扫描量热、显微硬度和能谱分析,研究了时效工艺对(Ni₅₀Ti₃₅Hf₁₅)₉₀Nb₁₀高温形状记忆合金的马氏体相变行为和热循环稳定性的影响。结果表明,在450 ℃时效处理,随着时效时间延长,试验合金的奥氏体相变峰值温度(Ap)和马氏体相变峰值温度(Mp)均先升高后降低;在550、650 ℃时效处理,随着时效时间延长,奥氏体相变峰值温度(Ap)和马氏体相变峰值温度(Mp)均逐渐下降,且相较550 ℃时效,650 ℃时效时相变温度下降得更显著。550 ℃时效1 h的试样具有最佳的热循环稳定性,经10次热循环后的ΔAp和ΔMp分别为1.5 ℃和5.8 ℃。

关键词: 高温形状记忆合金, 时效处理, 热循环稳定性, 热分析

Abstract: Effect of aging treatment on martensitic phase transformation behavior and thermal cycling stability of (Ni₅₀Ti₃₅Hf₁₅)₉₀Nb₁₀ high temperature shape memory alloy were investigated by combining differential scanning calorimetry, microhardness, and energy spectrum analysis. The results show that during aging treatment at 450 ℃, both the austenite phase transformation peak temperature (Ap) and martensite phase transformation peak temperature (Mp) of the experimental alloy increase first and then decrease with the extension of aging time. During aging treatment at 550 ℃ and 650 ℃, as the aging time increases, both the Ap and Mp gradually decrease. The phase transformation temperatures decrease more significantly during aging at 650 ℃ compared to aging at 550 ℃. The specimen aged at 550 ℃ for 1 h exhibits the best thermal cycling stability, with ΔAp and ΔMp of 1.5 ℃ and 5.8 ℃, respectively, after 10 thermal cycles.

Key words: high temperature shape memory alloy, aging treatment, thermal cycle stability, thermal analysis

中图分类号:

TG166.5

赵国简, 李昊原, 杨杰, 徐瑞瑶, 黄兴民, 金明江. 时效处理对Ni-Ti-Hf-Nb高温形状记忆合金相变热稳定性的影响[J]. 金属热处理, 2023, 48(7): 54-60.

Zhao Guojian, Li Haoyuan, Yang Jie, Xu Ruiyao, Huang Xingmin, Jin Mingjiang. Effect of aging treatment on phase transformation thermal stability of Ni-Ti-Hf-Nb high temperature shape memory alloy[J]. Heat Treatment of Metals, 2023, 48(7): 54-60.

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时效处理对Ni-Ti-Hf-Nb高温形状记忆合金相变热稳定性的影响

Effect of aging treatment on phase transformation thermal stability of Ni-Ti-Hf-Nb high temperature shape memory alloy

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