Nano-scale superelastic response of laser-welded NiTi shape-memory alloys

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2021-10-03 DOI:10.1080/09500839.2021.1972177

H. Vashishtha, D. Kumar, S. Neelakantan, J. Jain

引用次数: 1

Abstract

ABSTRACT In this work, Ni-Ti shape-memory alloy (SMA) plates were laser welded using different laser powers. A systematic trend of decreasing deterioration in nanomechanical properties – including superelastic recovery – from the weld centre, through the interface region and the heat-affected zone to the base–metal regimes has been observed. The extent of the deterioration increases with increasing laser power. The observations are explained in terms of a decreasing cooling rate and increasing austenite finish temperature (Af ) with an increase in laser power.

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激光焊接NiTi形状记忆合金的纳米超弹性响应

本文采用不同的激光功率对镍钛形状记忆合金（SMA）板进行了激光焊接。已经观察到从焊接中心、通过界面区域和热影响区到基底金属状态，纳米机械性能（包括超弹性恢复）的退化呈系统趋势。退化的程度随着激光功率的增加而增加。观察结果是根据冷却速率的降低和奥氏体终饰温度（Af）随激光功率的增加而增加来解释的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.