skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effect of solution hardening on the shape memory effect of Fe-Mn based alloys

Abstract

Fe-high Mn-Si alloys, which undergo {gamma} (fcc) to {var_epsilon} (hcp) martensitic transformation, exhibit a pronounced shape memory effect. The origin of shape memory effect of these alloys is the reversion of stress-induced {var_epsilon} martensite. A shape change must hence be accomplish3ed by stress-induced martensitic transformation without permanent slip in austenite ({gamma}) in order to obtain a good shape memory effect. It is clear that the intrusion of permanent slip can be suppressed by increasing the strength of austenite and by decreasing the applied stress required for a shape change due to stress-induced martensitic transformation. It has been reported that the addition of the interstitial elements of C and N as well as the substitutional elements of Mo and V increases the 0.2% proof stress of austenite in Fe-high Mn alloys. However, there have been few studies on the effect of these alloying elements on the shape memory effect of Fe-high Mn based alloys. In the present study, it was aimed to improve the shape memory effect of Fe-high Mn based alloys by the strengthening of austenite through solution hardening due to C and Mo.

Authors:
; ;  [1];  [2]
  1. Kyoto Univ. (Japan). Dept. of Materials Science and Engineering
  2. Ibaraki Univ., Hitachi (Japan)
Publication Date:
OSTI Identifier:
237830
Resource Type:
Journal Article
Journal Name:
Scripta Metallurgica et Materialia
Additional Journal Information:
Journal Volume: 33; Journal Issue: 7; Other Information: PBD: 1 Oct 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON ALLOYS; SHAPE MEMORY EFFECT; HARDENING; MANGANESE ALLOYS; SILICON ALLOYS; CARBON ADDITIONS; MOLYBDENUM ADDITIONS; CHEMICAL COMPOSITION; CRYSTAL-PHASE TRANSFORMATIONS; FCC LATTICES; HCP LATTICES; MARTENSITE; STRESSES; SLIP; DISLOCATIONS; INTERSTITIALS; AUSTENITE

Citation Formats

Tsuzaki, K, Natsume, Y, Maki, T, and Tomota, Y. Effect of solution hardening on the shape memory effect of Fe-Mn based alloys. United States: N. p., 1995. Web. doi:10.1016/0956-716X(95)00337-U.
Tsuzaki, K, Natsume, Y, Maki, T, & Tomota, Y. Effect of solution hardening on the shape memory effect of Fe-Mn based alloys. United States. https://doi.org/10.1016/0956-716X(95)00337-U
Tsuzaki, K, Natsume, Y, Maki, T, and Tomota, Y. Sun . "Effect of solution hardening on the shape memory effect of Fe-Mn based alloys". United States. https://doi.org/10.1016/0956-716X(95)00337-U.
@article{osti_237830,
title = {Effect of solution hardening on the shape memory effect of Fe-Mn based alloys},
author = {Tsuzaki, K and Natsume, Y and Maki, T and Tomota, Y},
abstractNote = {Fe-high Mn-Si alloys, which undergo {gamma} (fcc) to {var_epsilon} (hcp) martensitic transformation, exhibit a pronounced shape memory effect. The origin of shape memory effect of these alloys is the reversion of stress-induced {var_epsilon} martensite. A shape change must hence be accomplish3ed by stress-induced martensitic transformation without permanent slip in austenite ({gamma}) in order to obtain a good shape memory effect. It is clear that the intrusion of permanent slip can be suppressed by increasing the strength of austenite and by decreasing the applied stress required for a shape change due to stress-induced martensitic transformation. It has been reported that the addition of the interstitial elements of C and N as well as the substitutional elements of Mo and V increases the 0.2% proof stress of austenite in Fe-high Mn alloys. However, there have been few studies on the effect of these alloying elements on the shape memory effect of Fe-high Mn based alloys. In the present study, it was aimed to improve the shape memory effect of Fe-high Mn based alloys by the strengthening of austenite through solution hardening due to C and Mo.},
doi = {10.1016/0956-716X(95)00337-U},
url = {https://www.osti.gov/biblio/237830}, journal = {Scripta Metallurgica et Materialia},
number = 7,
volume = 33,
place = {United States},
year = {1995},
month = {10}
}