ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The shape memory alloy strips of Ti50Ni15Cu35 and Ti50Ni10Cu40 had been fabricated by arcmelt overflow. Their microstructures and shape memory characteristics were investigated by meansof X-ray diffraction, optical microscopy and differential scanning calorimetries. The microstructureof as-cast strips exhibited columnar grains normal to the strip surface. X-ray diffraction analysisshowed that one-step martensitic transformation of B2-B19 occurred in the alloy strips. According tothe DSC analysis, it was known that the martensitic transformation temperature (Ms) of B2→B19 was71.2°C in Ti50Ni15Cu35 and 64.5°C in Ti50Ni10Cu40 alloy strip, respectively. During thermal cyclicdeformation with the applied stress of 60 MPa, transformation hysteresis and elongation associatedwith the B2-B19 transformation were observed to be 4.9°C and 1.4% in Ti50Ni15Cu35 alloy strip.However, Ti50Ni10Cu40 alloy strip was so brittle that its mechanical properties could not be measured
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.463.pdf
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