Metamagnetic shape memory effect in polycrystalline NiCoMnSn alloy fabricated by spark plasma sintering

2009 ◽  
Vol 61 (5) ◽  
pp. 504-507 ◽  
Author(s):  
K. Ito ◽  
W. Ito ◽  
R.Y. Umetsu ◽  
S. Tajima ◽  
H. Kawaura ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Spark Plasma Sintering ◽  
Memory Effect ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Net-Shape NiTi Shape Memory Alloy by Spark Plasma Sintering Method

2021 ◽  
Vol 11 (4) ◽  
pp. 1802
Author(s):  
Sneha Samal ◽  
Orsolya Molnárová ◽  
Filip Průša ◽  
Jaromír Kopeček ◽  
Luděk Heller ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Spark Plasma Sintering ◽  
Memory Effect ◽  
Niti Alloy ◽  
Niti Shape Memory Alloy ◽  
Good Shape ◽  
Plasma Sintering ◽  
Shape Memory Effects ◽  
Spark Plasma

An analysis of the shape memory effect of a NiTi alloy by using the spark plasma sintering approach has been carried out. Spark plasma sintering of Ti50Ni50 powder (20–63 µm) at a temperature of 900 °C produced specimens showing good shape memory effects. However, the sample showed 2.5% porosity due to a load of 48 MPa. Furthermore, an apparent shape memory effect was recorded and the specimens were characterized by uniformity in chemical composition and shape memory alloys of NiTi showed significant austenite phases with a bending strain recovery of >2.5%.

scholarly journals NiMn-Based Metamagnetic Shape Memory Alloys

2009 ◽  
Vol 635 ◽  
pp. 23-31 ◽  
Author(s):  
Ryosuke Kainuma ◽  
K. Ito ◽  
W. Ito ◽  
R.Y. Umetsu ◽  
T. Kanomata ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Powder Metallurgy ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Parent Phase ◽  
Martensite Phase ◽  
Ternary Alloys ◽  
Plasma Sintering ◽  
Spark Plasma

The magnetic properties of the parent and martensite phases of the Ni2Mn1+xSn1-x and Ni2Mn1+xIn1-x ternary alloys and the magnetic field-induced shape memory effect obtained in NiCoMnIn alloys are reviewed, and our recent work on powder metallurgy performed for NiCoMnSn alloys is also introduced. The concentration dependence of the total magnetic moment for the parent phase in the NiMnSn alloys is very different from that in the NiMnIn alloys, and the magnetic properties of the martensite phase with low magnetization in both NiMnSn and NiMnIn alloys has been confirmed by Mössbauer examination as being paramagnetic, but not antiferromagnetic. The ductility of NiCoMnSn alloys is drastically improved by powder metallurgy using the spark plasma sintering technique, and a certain degree of metamagnetic shape memory effect has been confirmed.

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.

scholarly journals Preparation of Ni-Ti Shape Memory Alloy by Spark Plasma Sintering Method

2016 ◽  
Vol 16 (4) ◽  
pp. 804-808 ◽  
Author(s):  
Pavel Salvetr ◽  
Tomáš František Kubatík ◽  
Pavel Novák
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

Effect of Cu Addition on Cyclic Deformation Properties of Ti-Ni Shape Memory Alloy Fabricated by Spark-Plasma Sintering Method

2002 ◽  
Vol 2002.2 (0) ◽  
pp. 511-512
Author(s):  
Takeshi Kadomura ◽  
Masakazu Yokota ◽  
Hideki Kyogoku ◽  
Shinichiro Komatsu ◽  
Fusahito Yoshida ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Cyclic Deformation ◽  
Plasma Sintering ◽  
Deformation Properties ◽  
Spark Plasma ◽  
Sintering Method

K-0406 Fabrication of Ti-Ni-Cu Shape Memory Alloy by Spark-Plasma Sintering and Its Thermo-Mechanical Properties

2001 ◽  
Vol I.01.1 (0) ◽  
pp. 91-92
Author(s):  
Masakazu YOKOTA ◽  
Hideki KYOGOKU ◽  
Shinichiro KOMATSU ◽  
Fusahito YOSHIDA ◽  
Toshio SAKUMA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

Manufacturing of Cu-15.0Zn-8.1Al Shape Memory Alloy Using Spark Plasma Sintering

2004 ◽  
Vol 449-452 ◽  
pp. 1109-1112 ◽  
Author(s):  
No Jin Park ◽  
Suck Jong Lee ◽  
In Sung Lee ◽  
Kyeong Sik Cho ◽  
Sung Jin Kim
Keyword(s):  
Grain Size ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Powder Size ◽  
Plasma Sintering ◽  
Average Grain Size ◽  
Fine Microstructure ◽  
Spark Plasma ◽  
Ar Gas

In order to control the grain size of Cu-15.0Zn-8.1Al shape memory alloy, the spark plasma sintering (SPS) technique was applied. The sintering processes were carried out under different atmospheres with a different powder size. The sintered bodies were denser under the Ar+4%H2 gas atmosphere than under the 100% Ar gas. By using the small-sized powders, the fine microstructure with average grain size of 2~3􀀀 was obtained. With the large-sized powders, the single martensitic phase was observed with the average grain size of 70~72􀀀 . When the starting powders with different sizes were mixed, it is confirmed that the average grain size of the manufactured alloys was 15􀀀 , but the distribution of grain size was not uniform.

Properties of Ni2MnGa Shape Memory Alloy Prepared by Spark Plasma Sintering

2000 ◽  
Vol 327-328 ◽  
pp. 489-492 ◽  
Author(s):  
Z. Wang ◽  
Minoru Matsumoto ◽  
Sokrates T. Pantelides ◽  
Kenichi Oikawa ◽  
J. Qiu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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