The effect of nickel on the mechanical behavior of molybdenum P/M steels

The effect of nickel on the mechanical behavior of molybdenum P/M steels

This study has examined the effects of nickel alloying additions on the microstructural characteristics and mechanical properties of Fe– xNi–0.85Mo–0.4C-base steels that were powder processed using double-press double-sinter processing to maximize density. The steels were examined in the as-processe...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 390; no. 1; pp. 19 - 26
Main Authors: Gething, B.A., Heaney, D.F., Koss, D.A., Mueller, T.J.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 15-01-2005
Elsevier
Subjects:
Applied sciences
Double-press double-sintered steels
Elasticity. Plasticity
Exact sciences and technology
Fatigue strength
High strength
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Molybdenum/nickel steels
Pressed and sintered steels
Tensile strength
High strength
Fatigue strength
Double-press double-sintered steels
Molybdenum/nickel steels
Tensile strength
Pressed and sintered steels
Heat treatment
Mechanical properties
Transition metal
Tensile property
Steel
Alloying element
Powder metallurgy
Elongation at fracture
Sintering
Microstructure
Quenching and tempering
Elongation (mechanics)
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Summary:This study has examined the effects of nickel alloying additions on the microstructural characteristics and mechanical properties of Fe– xNi–0.85Mo–0.4C-base steels that were powder processed using double-press double-sinter processing to maximize density. The steels were examined in the as-processed condition as well as in a quench-and-temper heat treated condition. Tensile behavior indicates that while nickel content (at levels of 2,4, and 6%) increased tensile strength in the as-sintered condition, it did not significantly affect tensile strength in the quenched and tempered condition. In both conditions increasing Ni content decreased elongation to fracture. The 4% Ni steel, which tended to have the smallest maximum pore size, also exhibited the greatest fatigue strength.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2004.05.087