Effect of NiAl precipitation on shape recovery of CuZnAlNi alloy
| Autor: | J. Lelątko, H. Morawiec |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Quenching
Nial Materials science Bainite Precipitation (chemistry) Mechanical Engineering Alloy Metallurgy Shape-memory alloy engineering.material Mechanics of Materials visual_art Diffusionless transformation Aluminium alloy visual_art.visual_art_medium engineering General Materials Science computer computer.programming_language |
| Zdroj: | Journal of Materials Science. 31:2767-2773 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/bf00687313 |
| Popis: | In a CuZnAl alloy containing 2.2 wt% of nickel it was found that due to alloy quenching and low temperature ageing, precipitation of NiAl disperse particles takes place resulting in raising of martensitic transformation characteristic temperatures. The ease with which this phase precipitates indicates the low thermal stability of this alloy. At the same time the process of precipitation of NiAl particles offers an opportunity for control of shape recovery temperature by varying quenching temperature, cooling rate and especially ageing time, since variations of characteristic temperatures as a function of ageing time can be expressed by the relation ΔT=At0.5. It was also ascertained that the two way shape memory effect, as opposed to the one-way effect, is sensitive to processes associated with alloy ageing and also matrix phase transition in the bainite. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink