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RESEARCH PAPERS

An Investigation of the Effects of Grain Size and Hardness in Temper-Embrittled 2 1/4 Cr-1 Mo Steel

[+] Author and Article Information
C. J. McMahon, D. H. Gentner, A. H. Ucisik

Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pa. 19104

J. Eng. Mater. Technol 106(1), 66-70 (Jan 01, 1984) (5 pages) doi:10.1115/1.3225678 History: Received August 29, 1983; Online September 23, 2009

Abstract

Measurements of FATT as a function of hardness, grain size, and fracture surface impurity concentration were made on a 2 1/4 Cr-1 Mo steel doped with Mn + Si + P in an effort to devise an embrittlement equation relating FATT to these variables, as done previously in NiCr and NiCrMoV steels. Observations of the hardness and grain size effects on an undoped steel were also made. The effects of variations of hardness and grain size were quite irregular, especially in the doped steel, and it was therefore not possible to develop the equation. The probable reasons for the inapplicability of this approach in the 2 1/4 Cr-1 Mo type of steel are discussed.

Copyright © 1984 by ASME
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