AGING MARTENSITE ABOVE A(S) TEMPERATURE

Authors
IQBAL J TAUQIR A HASHMI FH KHAN AQ
Citation
J. Iqbal et al., AGING MARTENSITE ABOVE A(S) TEMPERATURE, Materials science and technology, 13(7), 1997, pp. 618-620
Citations number
12
Categorie Soggetti
Metallurgy & Metallurigical Engineering","Material Science
Journal title
Materials science and technology → ACNP
ISSN journal
02670836
Volume
13
Issue
7
Year of publication
1997
Pages
618 - 620
Database
ISI
SICI code
0267-0836(1997)13:7<618:AMAAT>2.0.ZU;2-N
Abstract
Maraging steel is normally aged at 480 to 510 degrees C whereas its A( s) is below 560 degrees C. In the present study, the specimens were ag ed at 510 degrees C and 570 degrees C for durations of 180 and 10 min, respectively. The hardness, tensile strength, notch tensile strength, and phases formed were determined. The kinetics of the aging process were studied and the activation energies determined. The distribution of precipitates formed was studied using TEM. The results show that a short exposure at 570 degrees C can impart properties comparable to th ose of the traditionally aged material. (C) 1997 The Institute of Mate rials.