Powder-metallurgy preparation of NiTi shape-memory alloy using mechanical alloying and spark-plasma sintering

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%.

Download Full-text

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

MANUFACTURING TECHNOLOGY ◽

10.21062/ujep/x.2016/a/1213-2489/mt/16/4/804 ◽

2016 ◽

Vol 16 (4) ◽

pp. 804-808 ◽

Cited By ~ 3

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

Download Full-text

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

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2002.2.0_511 ◽

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

Download Full-text

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

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.i.01.1.0_91 ◽

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

Download Full-text

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

Materials Science Forum ◽

10.4028/www.scientific.net/msf.449-452.1109 ◽

2004 ◽

Vol 449-452 ◽

pp. 1109-1112 ◽

Cited By ~ 2

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.

Download Full-text

Properties of Ni2MnGa Shape Memory Alloy Prepared by Spark Plasma Sintering

Materials Science Forum ◽

10.4028/www.scientific.net/msf.327-328.489 ◽

2000 ◽

Vol 327-328 ◽

pp. 489-492 ◽

Cited By ~ 7

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

Download Full-text

Advanced Powder Metallurgy Technologies

Materials ◽

10.3390/ma13071742 ◽

2020 ◽

Vol 13 (7) ◽

pp. 1742 ◽

Cited By ~ 1

Author(s):

Pavel Novák

Keyword(s):

World War Ii ◽

Powder Metallurgy ◽

Mechanical Alloying ◽

Spark Plasma Sintering ◽

Chemical Reduction ◽

Hot Isostatic Pressing ◽

Synthesis Methods ◽

Special Focus ◽

Plasma Sintering ◽

Spark Plasma

Powder metallurgy is a group of advanced processes for the synthesis, processing, and shaping of various kinds of materials. Initially inspired by ceramics processing, the methodology comprising of the production of a powder and its transformation to a compact solid product has attracted great attention since the end of World War II. At present, there are many technologies for powder production (e.g., gas atomization of the melt, chemical reduction, milling, and mechanical alloying) and its consolidation (e.g., pressing and sintering, hot isostatic pressing, and spark plasma sintering). The most promising ones can achieve an ultra-fine or nano-grained structure of the powder, and preserve it during consolidation. Among these methods, mechanical alloying and spark plasma sintering play a key role. This Special Issue gives special focus to the advancement of mechanical alloying, spark plasma sintering and self-propagating high-temperature synthesis methods, as well as to the role of these processes in the development of new materials.

Download Full-text