Martensite destabilization in Au7Cu5Al4 shape-memory alloy
MetadataShow full item record
Aging-induced changes in the austenite peak (AP) temperature of Au7Cu5Al4 shape-memory alloy are investigated. Whereas heat treating the parent phase at temperatures >140 degrees C or aging the martensite for long times at room temperature both stabilized the AP to approximately 80 degrees C, low-temperature excursions into the parent phase caused the subsequent AP to drop to approximately 60 degrees C and the transformation hysteresis to decrease. The evidence indicates that this destabilization of the martensite is caused by time-dependent relaxation of elastic constraint due to parent-phase lath migration during the preceding low-temperature austenitizing treatment. This mechanism of aging is different from that of the better-known symmetry-conforming short-range order phenomenon.
Showing items related by title, author, creator and subject.
Investigation of the production and mechanical properties of porous Beta Titanium alloy compacts prepared by powder metallurgy processes for biomedical applicationsNugroho, Aris Widyo (2013)Titanium and its alloys are known to be widely used for biomedical applications due to their biocompatibility, and excellent corrosion resistance. The introduction of porosity into the metals may reduce the stiffness to ...
Pramanik, Alokesh; Littlefair, G. (2015)This paper correlates laboratory based understanding in machining of titanium alloys with theindustry based outputs and find possible solutions to improve machining efficiency oftitanium alloy Ti-6Al-4V. The machining ...
Murshidi, Julie Andrianny (2012)Concerns about the impact that fossil fuels have on the environment and their increasing price to the consumer have led to research being undertaken to evaluate and refine other energy carriers that will be comparable to ...