EFFECT OF AGING CONDITIONS ON THE AMOUNT OF THE RESIDUAL AUSTENITE IN FUELING APPARATUS

Journal Article · Sat Mar 31 23:00:00 EST 1962 · Metalloved. i Termichesk. Obrabotka Metal.

OSTI ID:4780679

Kheifets, Yu I; Oryshich, I V

The effect of various aging conditions on the amount of the residual austenite in Cr--Mn--W and Mn steels was investigated together with changes of the crystal lattice parameters. Results indicated that the Cr--Mn--W steel retains a larger portion of the austenite than the Mn steel. Aging at 130 deg C for 24 hours did not have a noticeable effect on the austenite remaining after annealing at 160 deg C but aging at higher temperature reduces it. Annealing diminished the tetragonal character of the martensite and caused shrinkage of the dimensions of the specimens. The aging process caused the transformation of the martensite, a partial decomposition of the austenite, and redistribution of the stresses but these processes could not be brought to completion at 130 deg C. For materials to be used for ihe fabrication of fueling apparatus it is recommended that a treatment consisting of quenching at 160 deg C for 4 to 5 hours, followed by air cooling and aging at 160 deg C after the machining process be carried out. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-030837
• OSTI ID: 4780679
• Journal Information: Metalloved. i Termichesk. Obrabotka Metal., Journal Name: Metalloved. i Termichesk. Obrabotka Metal. Vol. Vol: No. 4
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

AIR
ANNEALING
AUSTENITE
CHROMIUM ALLOYS
CONFIGURATION
COOLING
CRYSTALS
DEFORMATION
DISTRIBUTION
FABRICATION
FUELS
HEAT TREATMENTS
LATTICES
MACHINE PARTS
MACHINING
MANGANESE ALLOYS
MARTENSITE
METALS, CERAMICS, AND OTHER MATERIALS
SHRINKAGE
STEELS
STRESSES
TEMPERATURE
TUNGSTEN ALLOYS
VARIATIONS
VOLUME