4.3 Article

Cubic martensite in high carbon steel

Journal

PHYSICAL REVIEW MATERIALS
Volume 2, Issue 5, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevMaterials.2.050601

Keywords

-

Funding

  1. National Natural Science Foundation of China [51771012, 51431007, 51671043]

Ask authors/readers for more resources

A distinguished structural characteristic of martensite in Fe-C steels is its tetragonality originating from carbon atoms occupying only one set of the three available octahedral interstitial sites in the body-centered-cubic (bcc) Fe lattice. Such a body-centered-tetragonal (bct) structure is believed to be thermodynamically stable because of elastic interactions between the interstitial carbon atoms. For such phase stability, however, there has been a lack of direct experimental evidence despite extensive studies of phase transformations in steels over one century. In this Rapid Communication, we report that the martensite formed in a high carbon Fe-8Ni-1.26C (wt%) steel at room temperature induced by applied stress/strain has actually a bee rather than a bet crystal structure. This finding not only challenges the existing theories on the stability of bee vs bet martensite in high carbon steels, but also provides insights into the mechanism for martensitic transformation in ferrous alloys.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.3
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available