Crystallography of lath martensite and stabilization of retained austenite

Technical Report · Fri Oct 01 00:00:00 EDT 1982

DOI:https://doi.org/10.2172/6620798· OSTI ID:6620798

Sarikaya, M

TEM was used to study the morphology and crystallography of lath martensite in low and medium carbon steels in the as-quenched and 200/sup 0/C tempered conditions. The steels have microduplex structures of dislocated lath martensite and continuous thin films of retained austenite at the lath interfaces. Stacks of laths form the packets which are derived from different (111) variants of the same austenite grain. The residual parent austenite enables microdiffraction experiments with small electron beam spot sizes for the orientation relationships (OR) between austenite and martensite. All three most commonly observed ORs, namely Kurdjumov-Sachs, Nishiyama-Wassermann, and Greninger-Troiano, operate within the same sample.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6620798
• Report Number(s): LBL-15111; ON: DE83003714
• Resource Relation: Other Information: Thesis. Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON STEELS
CRYSTALLOGRAPHY
MICROSTRUCTURE
AUSTENITE
ELECTRON DIFFRACTION
HEAT TREATMENTS
LATTICE PARAMETERS
MARTENSITE
MORPHOLOGY
TRANSMISSION ELECTRON MICROSCOPY
ALLOYS
CARBON ADDITIONS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON MICROSCOPY
IRON ALLOYS
IRON BASE ALLOYS
MICROSCOPY
SCATTERING
STEELS
360102* - Metals & Alloys- Structure & Phase Studies