| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1583557 | Materials Science and Engineering: A | 2007 | 4 Pages |
Abstract
The supermartensitic stainless steels (SMSS) must be developed considering a balance between strength and toughness that are achieved by controlling the chemical compositions and heat treatment. In this paper, the results of detailed investigations on 12.50 Cr-5.40 Ni-2.10 Mo-0.13 Ti SMSS composition were obtained after the SMSS was put in a vacuum furnace and subsequently hot rolled and heat-treated. A very fine microstructure of martensite matrix with nanometer size particles of titanium carbonitride (Ti(C, N)-70Â nm) was selected after quenching and tempering. Such microstructure reasonably showed an improved mechanical property values: 28Â RC hardness, 804Â MPa tensile strength, 764Â MPa yield strength, 23.7% elongation and 256Â J impact energy.
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Authors
C.A.D. Rodrigues, P.L.D. Lorenzo, A. Sokolowski, C.A. Barbosa, J.M.D.A. Rollo,