Abstract
A practical procedure for determining uniquely the habit planes of martensite plates with {112}α transformation twins observed by means of transmission electron microscope is presented. The procedure includes one-surface trace analyses of habit and transformation twin planes, and the analysis of the orientation relationship between austenite and martensite. Three applied examples with different foil orientations are shown for thin-plate martensites with {3 15 10}γ habit plane containing {112}α twin in an Fe-24.67 mass%Ni-0.87 mass%C alloy. The possibility of a unique determination using the trace data depends entirely upon the foil orientation. Therefore, the foil orientations are classified into three groups; (i) {100}γ and {110}γ mirror symmetry planes;—impossible, (ii) orientations around the mirror symmetry planes;—possible in combination with the analysis of the orientation relationship, and (iii) other orientations than (i) and (ii);—possible. A least square method to determine the mean habit planes by a number of one-surface trace analyses is proposed. The mean habit plane obtained is the (0.1969 0.7829 0.5901)γ, and its standard deviation is evaluated to be ±4.4° in the present thin-plate martensite.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Institute of Metals and Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
