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Title: Stress induced martensite in NiTi corrugated films

Abstract

Shape memory alloy (SMA) films have been so far deposited on planar Si, metallic and polymeric surfaces and investigated either in the detached or attached two-way SM states. It has been shown that uniform film stresses which are introduced during cooling from the processing temperature effect the transformation characteristics significantly. It is also known that non-planar surfaces are conducive to graphoepitaxial growth. In this paper the authors show that the density of martensite plates in a corrugated (Ni{sub 50}Ti{sub 50} film)/(Si substrate) composite corresponds to the density of pyramidal etch patterns in the substrate and propose that the non-uniform stress state gives rise to local stress induced formation of martensite.

Authors:
; ; ; ;  [1]
  1. Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering
Publication Date:
OSTI Identifier:
691338
Resource Type:
Journal Article
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 41; Journal Issue: 5; Other Information: PBD: 6 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; NICKEL ALLOYS; TITANIUM ALLOYS; THIN FILMS; MARTENSITE; SHAPE MEMORY EFFECT; CRYSTAL-PHASE TRANSFORMATIONS

Citation Formats

Wuttig, M., Zheng, Y., Slutsker, J.S., Mori, Kiyotaka, and Su, Q. Stress induced martensite in NiTi corrugated films. United States: N. p., 1999. Web. doi:10.1016/S1359-6462(99)00146-3.
Wuttig, M., Zheng, Y., Slutsker, J.S., Mori, Kiyotaka, & Su, Q. Stress induced martensite in NiTi corrugated films. United States. doi:10.1016/S1359-6462(99)00146-3.
Wuttig, M., Zheng, Y., Slutsker, J.S., Mori, Kiyotaka, and Su, Q. Fri . "Stress induced martensite in NiTi corrugated films". United States. doi:10.1016/S1359-6462(99)00146-3.
@article{osti_691338,
title = {Stress induced martensite in NiTi corrugated films},
author = {Wuttig, M. and Zheng, Y. and Slutsker, J.S. and Mori, Kiyotaka and Su, Q.},
abstractNote = {Shape memory alloy (SMA) films have been so far deposited on planar Si, metallic and polymeric surfaces and investigated either in the detached or attached two-way SM states. It has been shown that uniform film stresses which are introduced during cooling from the processing temperature effect the transformation characteristics significantly. It is also known that non-planar surfaces are conducive to graphoepitaxial growth. In this paper the authors show that the density of martensite plates in a corrugated (Ni{sub 50}Ti{sub 50} film)/(Si substrate) composite corresponds to the density of pyramidal etch patterns in the substrate and propose that the non-uniform stress state gives rise to local stress induced formation of martensite.},
doi = {10.1016/S1359-6462(99)00146-3},
journal = {Scripta Materialia},
number = 5,
volume = 41,
place = {United States},
year = {1999},
month = {8}
}