ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The effects of flash-heating and aging on the microstructure and transformationcharacteristics has been studied in Cu-Al-Ni based melt-spun ribbons. When the as-spun ribbon,stabilized due to higher Al content and fast cooling, is flash-heated at 750 °C, the β1 parent phase ispartially retained. Even though flash-heating temperature is increased upto 850 °C, a little β1 parentphase with lager grains above 10 μm is still retained. The Ms temperature is increased withincreasing flash-heating temperature due to the decrease of grain constraint within grown grains.However, the greater part of β1 parent phase with smaller grains of 2 ~ 3 μm is transformed tomartensite in the initial stage of aging at 200 °C. The Ms temperature of the ribbon with smallergrains is higher than that of the ribbon with larger grains. It is considered that the increase of Mstemperature is caused to the disappearance of lattice defects introduced during melt spinning byaging at 200 °C rather than grain growth
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.118.59.pdf
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