Transformation behavior and shape memory characteristics of Ti-(45-x)Ni-5Cu-xV alloys

2007 ◽  
Author(s):  
Ju-young Choi ◽  
Eunsoo Choi ◽  
Baik-Soon Cho ◽  
Young-soo Chung ◽  
Tae-hyun Nam
Keyword(s):  
Shape Memory ◽  
Transformation Behavior ◽  
Memory Characteristics

Transformation Behavior and Shape Memory Characteristics of Ti-45Ni-5Cu(at%) Alloy Ribbons Fabricated by Melt Spinning

2004 ◽  
Vol 449-452 ◽  
pp. 1093-1096 ◽  
Author(s):  
Tae Hyun Nam ◽  
Jae Hwa Lee ◽  
Tae Yeon Kim ◽  
Yeon Wook Kim
Keyword(s):  
Shape Memory ◽  
Melt Spinning ◽  
Constant Load ◽  
X Ray Diffraction ◽  
Transformation Behavior ◽  
X Ray ◽  
Density Of Dislocations ◽  
Large Lattice ◽  
One Step ◽  
Memory Characteristics

Transformation behaviors and shape memory characteristics of Ti-45Ni-5Cu alloy ribbons fabricated by melt spinning were investigated by means of optical microscopy, differential scanning calorimetries(DSC), X-ray diffraction and thermal cycling tests under constant load. They depended largely on temperatures of liquid metal. The B2-B19-B19’ two-step transformation occurred in the ribbons fabricated with the liquid whose temperature was higher than 1723 K, while the B2-B19’ one-step transformation occurred in the ribbons with the liquid at 1673 K. The stabilization of the B19 martensite in Ti-45Ni-5Cu alloy ribbons was ascribed to the high density of dislocations which made strong resistance to large lattice deformation associated with a formation of the B19’ martensite.

scholarly journals Phase Transformation Behavior and Shape Memory Characteristics of Ti-Ni-Cu-Mo Alloys

2002 ◽  
Vol 43 (5) ◽  
pp. 802-808 ◽  
Author(s):  
Tae-Hyun Nam ◽  
Jung-Phil Noh ◽  
Shin-Goo Hur ◽  
Ji-Soon Kim ◽  
Seung-Baik Kang
Keyword(s):  
Phase Transformation ◽  
Shape Memory ◽  
Transformation Behavior ◽  
Phase Transformation Behavior ◽  
Memory Characteristics

Transformation behavior and shape memory characteristics of Ti–40Ni–10Cu(at.%) alloy ribbons

2007 ◽  
Vol T129 ◽  
pp. 255-260
Author(s):  
J M Nam ◽  
G B Cho ◽  
H J Ahn ◽  
Y W Kim ◽  
T H Nam
Keyword(s):  
Shape Memory ◽  
Transformation Behavior ◽  
Memory Characteristics

Transformation behavior and shape memory characteristics of thermo-mechanically treated Ti–(45−x)Ni–5Cu–xV (at%) alloys

2012 ◽  
Vol 47 (10) ◽  
pp. 2939-2942 ◽  
Author(s):  
Jae-young Jang ◽  
Su-jin Chun ◽  
Eunsoo Choi ◽  
Yinong Liu ◽  
Hong Yang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Transformation Behavior ◽  
Memory Characteristics

scholarly journals Shape Memory NiTi and NiTiCu Alloys Obtained by Spark Plasma Sintering Process

2015 ◽  
Vol 13 ◽  
pp. 83-90 ◽  
Author(s):  
Cristiana Diana Cristea ◽  
Magdalena Lungu ◽  
Alexander M. Balagurov ◽  
Virgil Marinescu ◽  
Otilia Culicov ◽  
...  
Keyword(s):  
Shape Memory ◽  
Intermetallic Compounds ◽  
Spark Plasma Sintering ◽  
Sintering Process ◽  
Transformation Behavior ◽  
Plasma Sintering ◽  
New Process ◽  
Shape Memory Properties ◽  
Spark Plasma ◽  
Niti Shape Memory Alloys

The addition of Cu to near equiatomic NiTi shape memory alloys (SMAs) can provide some modifications of their shape memory properties by affecting their transformation behavior. The same effect was obtained in the case of Ni3Ti2 and Ni4Ti3 precipitates presence in the microstructure of NiTi. Also the substitution of Cu to NiTi alloys increases the hardness of the materials. This paper presents the microstructural and mechanical investigations of NiTi and NiTiCu alloys obtained by spark plasma sintering (SPS) process that represents a great potential for researchers as a new process for the fabrication of intermetallic compounds.

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