PHASE TRANSFORMATIONS IN THE Cr17Ni7Al TYPE STEELS

Journal Article · Tue Nov 01 04:00:00 EST 1960 · Metalloved. i Termichesk, Obrabotka Metal

OSTI ID:4107576

Fel'dgandler, E G; Pridantsev, M V

Although the heat treatment of austenite-martensitic stainless steels was widely studied, the phase transformations occurring during the process are not well known. The kinetics of the strengthening and of the martensitic transformation of a steel containing 0.075% C; 0.6% Mn; 0.31% Si; 16.4 to 16.9% Cr; 7.2 to 7.4% Ni; 0.6 to 1.2% Al; and 0.02 to 0.04% N/sub 2/ was studied as a function of the temperature and the duration of annealing. It was established that the maximum strengthening and the martensite formation are independent of each other. Soaking the metal at a temperature of 450 to 500 deg for 3 hr does not improve the strength of the metal although it corresponds to the maximum of the martensite formation. Increased strength is connected with the deposition of an intermetallic compound (FeNi)/sub 3/Al; to a lesser extent, with the martensitic transformation; and with the precipitation of microdispersed carbides. (TTT)

• Research Organization: Central Scientific Research Inst. of Ferrous Metals, USSR
• NSA Number: NSA-15-006418
• OSTI ID: 4107576
• Journal Information: Metalloved. i Termichesk, Obrabotka Metal, Journal Name: Metalloved. i Termichesk, Obrabotka Metal Vol. Vol: No. 11
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALUMINUM ALLOYS
ANNEALING
AUSTENITE
CARBIDES
CHROMIUM ALLOYS
DISPERSIONS
HEAT TREATMENTS
INTERMETALLIC COMPOUNDS
MANGANESE ALLOYS
MARTENSITE
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL ALLOYS
NITRIDES
PHASE DIAGRAMS
PRECIPITATION
SILICIDES
SOAKING
STAINLESS STEELS
STRESSES
TEMPERATURE
TENSILE PROPERTIES