Abstract
Interactions of moving β 1 /β' 1 , β 1 /γ' 1 austenite/martensite interfaces with grain boundaries in CuAlNi bicrystals were investigated by thermomechanical cycling in compression and experimental stress-strain-temperature data were compared with the data of component single crystal grains. In situ optical observations of the surface of transforming crystals during the stress-strain test suggest that the β 1 →β' 1 transformation is favored on the expense of the β 1 →γ' 1 transformation in the bicrystal. The reason is that even a grain boundary fully complying with the strain compatibility conditions hinders the macroscopic shape change of adjacent grains accompanying the phase transformation into a single martensite phase. As a result, complex internal stress state suitable for the β 1 →β' 1 transition arises in the transforming bicrystal.
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 callDisclaimer: 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.
