Crossref journal-article
AIP Publishing
Journal of Applied Physics (317)
Abstract

The relation between elastic and plastic strains and the martensite transformation from face-centered to body-centered structure has been investigated in Fe-Ni 71–29 alloy. Transformation begins at about −30°C and is of the martensite type except that it is not all completed instantaneously but continues at decreasing rate at constant temperature. It was found that (1) There is no anomalous decrease in elastic moduli as the Ms temperature is approached, nor is Ms affected by applied elastic stresses. (2) Plastic deformation in a temperature range above Ms causes partial transformation in amounts decreasing to zero at temperature Md≈Ms+75°C, but stabilizes against further transformation by cooling. (3) Plastic yield stress increases sharply from Md to Ms then drops suddenly to a low value just below Ms. (4) The Ms temperature depends on grain size; a factor of ten increase in grain size reduces Ms about 30°C. These results are contrary to expectations on the basis of the usual homogeneous shear model for the transformation mechanism. They indicate that the martensite phase becomes thermodynamically stable at Md but that transformation does not begin until Ms because of surface and strain energy considerations in growth of a martensite plate from a small nucleus.

Bibliography

McReynolds, A. W. (1949). Effects of Stress and Deformation on the Martensite Transformation. Journal of Applied Physics, 20(10), 896–907.

Authors 1
  1. Andrew W. McReynolds (first)
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Dates
Type When
Created 20 years, 7 months ago (Jan. 15, 2005, 1:04 p.m.)
Deposited 1 year, 6 months ago (Feb. 1, 2024, 2:57 p.m.)
Indexed 2 months ago (June 25, 2025, 10:47 p.m.)
Issued 75 years, 10 months ago (Oct. 1, 1949)
Published 75 years, 10 months ago (Oct. 1, 1949)
Published Print 75 years, 10 months ago (Oct. 1, 1949)
Funders 0

None

@article{McReynolds_1949, title={Effects of Stress and Deformation on the Martensite Transformation}, volume={20}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1698251}, DOI={10.1063/1.1698251}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={McReynolds, Andrew W.}, year={1949}, month=oct, pages={896–907} }