Alloying by Magnesium: A Route How to Eliminate the Amount of Ti2Ni Phase in Ni-Ti Alloy

被引：0

作者：

Školakova A. ^{[1
]}

Salvetr P. ^{[1
]}

Novak P. ^{[1
]}

机构：

[1] University of Chemistry and Technology in Prague, Department of Metals and Corrosion Engineering, Technicka 5, Prague 6

来源：

| 1600年 / Jan-Evangelista-Purkyne-University卷 / 17期

关键词：

Ni-Ti-Mg alloy; Self-propagating High-temperature Synthesis; Ti2Ni phase;

D O I：

10.21062/ujep/x.2017/a/1213-2489/MT/17/4/576

中图分类号：

学科分类号：

摘要：

This article offers completely new results in the research of NiTi alloys produced by Self-propagating High-temperature Synthesis (SHS). There is investigated the effect of addition of magnesium on the microstructure, phase composition and especially, the amount of undesirable Ti2Ni phase. This phase is unwanted in NiTi alloy because of its brittleness. Moreover, this one is stabilized by oxygen and forms during SHS process. Selected preparation method is considered as an alternative to the melting metallurgy, which produced products with poor homogeneity and purity. For this reason, SHS process has been studied intensely and many researchers have tried to eliminate secondary phases unsuccessfully. Our research showed that alloying by element with high affinity to oxygen causes disappearance of Ti2Ni phase. © 2017. Published by Manufacturing Technology. All rights reserved.

引用

页码：50 / 51

页数：1

共 17 条

[1]

OTSUKA K., REN X., Physical metallurgy of Ti-Ni based shape memory alloys, Progress in Materials Science, 50, 5, pp. 511-678, (2005)

[2]

TAY B. Y., GOH C. W., GU Y. W., LIM C. S., YONG M. S., HO M. K., MYINT M. H., Porous NiTi fabricated by self-propagating high-temperature synthesis of elemental powders, Journal of Materials Processing Technology, 202, 1 – 3, pp. 359-364, (2008)

[3]

NAYAN N., SAIKRISHNA C.N., RAMAIAH K.V., BHAUMIK S.K., NAIR K.S., MITTAL M.C., Vacuum induction melting of NiTi shape memory alloys in graphite crucible, Materials Science and Engineering: A, 465, 1-2, pp. 44-48, (2007)

[4]

SADRNEZHAD S.K, RAZ S.B., Interaction between refractory crucible materials and the melted NiTi shape-memory alloy, Metallurgical and Materials Transactions B, 36, 3, pp. 395-403, (2005)

[5]

YANG Y. F., WANG H. Y., ZHAO R. Y., LIANG Y. H., ZHAN L., JIANG Q. C., Effects of C particle size on the ignition and combustion characteristics of the SHS reaction in the 20 wt. % Ni-Ti-C system, Journal of Alloys and Compounds, 460, 1 – 2, (2008)

[6]

BASSANI P., BASSANI E., TUISII A., GIULIANI P., ZANOTTI C., Nonequiatmic NiTi alloy produced by self propagating high temperature synthesis, journal of Materials Engineering and Performance, 23, 7, pp. 2373-2378, (2014)

[7]

NOVAK P., POKORNY P., VOJTECH V., KNAISLOVA A., SKOLAKOVA A., CAPEK J., KARLIK M., KOPECEK J., Formation of Ni – Ti intermetallics during reactive sintering at 500 – 650 °C, Materials Chemistry and Physics, 155, pp. 113-121, (2015)

[8]

NOVAK P., SKOLAKOVA A., VOJTECH V., KNAISLOVA A., POKORNY P., MORAVEC H., KOPECEK J., KARLIK M., KUBATIK T. F., Applications of microscopy and x-ray diffraction in optimization of the production of NiTi alloy by powder metallurgy, Manufacturing Technology, 14, 3, pp. 387-392, (2014)

[9]

SALVETR P., NOVAK P., MORAVEC H., Ni-Ti alloys produced by powder metallurgy, Manufacturing technology, 15, 4, pp. 689-694, (2015)

[10]

SKOLAKOVA A., NOVAK P., SALVETR P., Influence of elements with high affinity to oxygen on microstructure and phase composition of Ni-Ti alloy, Manufacturing technology, 16, 4, pp. 808-814, (2016)

← 1 2 →