Influence of nickel and molybdenum on the phase stability and mechanical properties of maraging steels

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Journal of Materials Engineering and Performance; (United States)

DOI:https://doi.org/10.1007/BF02645850· OSTI ID:6989603

Ahmed, M; Nasim, I; Husain, S W ^[1]

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1. Dr. A.Q. Khan Research Labs., Rawalpindi (Pakistan)

The effect of nickel and molybdenum concentrations on the phase transformation and mechanical properties of conventional 10Ni(350) maraging steel has been investigated. Both of these elements act as strong austenite stabilizers. When the concentration of molybdenum or nickel is greater than 7.5 or 24 wt%, respectively, the austenite phase remains stable up to room temperature. In both molybdenum- and nickel-alloyed steels, the austenite phase could be transformed to martensite by either dipping the material in liquid nitrogen or subjecting it to cold working. When 7.5 wt% Mo and 24 wt% Ni were added in combination, however, the austenite phase obtained at room temperature did not transform to martensite when liquid-nitrogen quenched or even when cold rolled to greater than 95% reduction. The aging response of these materials has also been investigated using optical, scanning electron, and scanning transmission electron microscopy.

• OSTI ID: 6989603
• Journal Information: Journal of Materials Engineering and Performance; (United States), Vol. 3:2; ISSN 1059-9495
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MARAGING STEELS
MECHANICAL PROPERTIES
PHASE TRANSFORMATIONS
MOLYBDENUM
METALLURGICAL EFFECTS
NICKEL
AGE HARDENING
CHARPY TEST
ALLOYS
DESTRUCTIVE TESTING
ELEMENTS
HARDENING
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
MARTENSITIC STEELS
MATERIALS TESTING
MECHANICAL TESTS
METALS
STEELS
TESTING
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties