Martensite destabilization in Au7Cu5Al4 shape-memory alloy
| dc.contributor.author | Bhatia, V. | |
| dc.contributor.author | Kealley, Cat | |
| dc.contributor.author | Prior, M. | |
| dc.contributor.author | Cortie, M. | |
| dc.date.accessioned | 2017-01-30T15:15:38Z | |
| dc.date.available | 2017-01-30T15:15:38Z | |
| dc.date.created | 2014-11-19T01:13:31Z | |
| dc.date.issued | 2011 | |
| dc.identifier.citation | Bhatia, V. and Kealley, C. and Prior, M. and Cortie, M. 2011. Martensite destabilization in Au7Cu5Al4 shape-memory alloy. Acta Materialia. 59: pp. 2193-2200. | |
| dc.identifier.uri | http://hdl.handle.net/20.500.11937/44658 | |
| dc.description.abstract |
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. | |
| dc.publisher | Pergamon | |
| dc.subject | Shape-memory alloys | |
| dc.subject | Neutron diffraction | |
| dc.subject | Aging | |
| dc.subject | X-ray diffraction | |
| dc.subject | Gold alloys | |
| dc.title | Martensite destabilization in Au7Cu5Al4 shape-memory alloy | |
| dc.type | Journal Article | |
| dcterms.source.volume | 59 | |
| dcterms.source.startPage | 2193 | |
| dcterms.source.endPage | 2200 | |
| dcterms.source.issn | 13596454 | |
| dcterms.source.title | Acta Materialia | |
| curtin.accessStatus | Fulltext not available |