Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/58392
DC Field | Value | |
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dc.title | Influence of heat treatment on properties of copper-based shape-memory alloy | |
dc.contributor.author | Lai, M.O. | |
dc.contributor.author | Lu, L. | |
dc.contributor.author | Lee, W.H. | |
dc.date.accessioned | 2014-06-17T05:14:05Z | |
dc.date.available | 2014-06-17T05:14:05Z | |
dc.date.issued | 1996 | |
dc.identifier.citation | Lai, M.O.,Lu, L.,Lee, W.H. (1996). Influence of heat treatment on properties of copper-based shape-memory alloy. Journal of Materials Science 31 (6) : 1537-1543. ScholarBank@NUS Repository. | |
dc.identifier.issn | 00222461 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/58392 | |
dc.description.abstract | An investigation was performed on a Cu-Zn-Al ternary alloy to examine the influence of heat treatment on its shape-memory effect. Four heat treatments were carried out, namely, step quenching, ice-water quenching, water quenching and glycol quenching from three different temperatures of 800, 850 and 900°C. It was observed that step-quenched samples showed the best martensitic structure for high resistance to shape-memory degradation. Ice-water quenching induced vacancy-pinning effects and hence lowered transformation temperature and degradation life compared to step quenching. However, no transformation was detected in water and glycol-quenched specimens due to the stabilization of martensite. The results showed that shape-memory effect is strongly influenced by many heat-treatment parameters, such as betatizing temperature, betatizing duration and rate of quenching. Step-quenched specimens also showed a higher number of cycles to failure in comparison to ice-quenched specimens. Owing to the dominating effects of large grain size and martensitic plates, the advantages of step quenching, however, disappeared when a high betatizing temperature of 900°C was used. Several kinds of defects were observed after fatigue testing, namely microvoids, cracks near martensitic plates, cracks at the interface of inclusions and inside inclusions. © 1996 Chapman & Hall. | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | MECHANICAL & PRODUCTION ENGINEERING | |
dc.description.sourcetitle | Journal of Materials Science | |
dc.description.volume | 31 | |
dc.description.issue | 6 | |
dc.description.page | 1537-1543 | |
dc.description.coden | JMTSA | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Staff Publications |
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