Accession Number:

AD0272111

Title:

MARTENSITIC TRANSFORMATION IN SINGLE CRYSTALS OF IRON ALLOYS. I. ATHERMAL MARTENSITE IN A STAINLESS STEEL

Descriptive Note:

Corporate Author:

YALE UNIV NEW HAVEN CONN HAMMOND LAB

Personal Author(s):

• BREEDIS,J.F.
• ROBERTSON,W.D.

Report Date:

1962-02-01

Pagination or Media Count:

1.0

Abstract:

Iden ifiers Dislocations. The morphology and crystallography of the martensite transfor ation was studied in single crystals of an Fe-16 Cr-12 Ni alloy, representing an austenitic stainless st l. The transformation proceed through a sequence of tructures from fcc to hcp o bcc, originati g with the hcp tructure in the 111 sub A plane, which subsequently transforms to bcc plates. A one surface analysis indicates that the habit plane of the plates is near 225 sub A. Relative orientation of the 3 structures, lattice para eters, M sub s mpera ur and reversion characteristics were determined and was consi re it re pect to the tran formation mechanism. Author

Descriptors:

• *AUSTENITE
• *CATHODES(ELECTRON TUBES)
• *MARTENSITE
• *STAINLESS STEEL
• ALLOYS
• CHROMIUM ALLOYS
• CRYSTAL LATTICES
• CRYSTAL STRUCTURE
• DEFORMATION
• ELECTRON MICROSCOPY
• GROWTH(PHYSIOLOGY)
• HEAT TREATMENT
• IRON ALLOYS
• METALLURGY
• NICKEL ALLOYS
• NUCLEATION
• PHASE STUDIES
• PLASTIC PROPERTIES
• TRANSFORMATIONS
• X RAY DIFFRACTION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE