Preparation of porous TiNi-Ti alloy by diffusion sintering method and study of its composition, structure and martensitic transformations

2021 ◽  
pp. 163559
Author(s):  
Sergey G. Anikeev ◽  
Nadezhda V. Artyukhova ◽  
Anastasiia V. Shabalina ◽  
Sergei A. Kulinich ◽  
Valentina N. Hodorenko ◽  
...  
Keyword(s):  
Martensitic Transformations ◽  
Ti Alloy ◽  
Composition Structure ◽  
Diffusion Sintering ◽  
Sintering Method

The Marker Conservation Law in Multiphase Systems

2016 ◽  
Vol 35 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Bartek Wierzba ◽  
Stanisław Wędrychowicz ◽  
Wojciech Skibiński
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Mechanical Property ◽  
Kirkendall Effect ◽  
Ti Alloy ◽  
Multicomponent Systems ◽  
Multiphase Systems ◽  
Fundamental Understanding ◽  
Properties Of Materials ◽  
Composition Structure

AbstractThe knowledge of the fundamental understanding such as composition–structure–mechanical property relationships caused by Kirkendall effect is in progress and is used to optimize mechanical properties of materials. In this paper the multiphase systems with low non-stoichiometry are discussed. It is shown that in such systems the drift velocity can be approximated as constant in each phase and determined by Wagner’s integral diffusivity. In this paper the binary in Ni–Ti alloy is discussed; however, the method can be applied to multicomponent systems. The results of the calculations are compared with experimental data.

scholarly journals Effect of sintering methods and cobalt addition on the shape memory properties of porous TiNi-based alloy

2017 ◽  
Vol 2 (1) ◽  
pp. 98
Author(s):  
N.V. Artyukhova ◽  
Yu.F. Yasenchuk ◽  
K.V. Almaeva ◽  
A.S. Garin ◽  
V.I. Shtin ◽  
...  
Keyword(s):  
Shape Memory ◽  
Martensitic Transformations ◽  
Internal Stresses ◽  
Sintered Alloy ◽  
Cobalt Doping ◽  
Temperature Dependences ◽  
Tini Phase ◽  
And Diffusion ◽  
Diffusion Sintering ◽  
Cobalt Addition

The changes of shape memory characteristics and properties of the porous sintered TiNi-based alloy are possible by a choice of the sintering methods or use of cobalt doping additive, as the present investigation has showed. The comparative analysis of the temperature dependences of electric resistance and macrodeformation both alloys, obtained by reaction and diffusion sintering was conducted. Diffusion-sintered alloy have showed high shape memory parameters and a more uniform passing of martensitic transformations. This is connected with a larger fraction of TiNi phase (about 90 vol.%) after diffusion sintering. It was found that the martensitic transformation characteristics and reversibility of martensitic strain in the porous nickelid titanium depend on level of intrinsic stresses in the TiNi phase and stresses caused by Co impurity. The addition to 1.0 at.% Co decreases the internal stresses in the TiNi phase, and more than 1.0 at.% Co increases their due to the effect of precipitation hardening of the alloy.

Data for one of the martensitic transformations in an 11 pct Mo-Ti alloy

JOM ◽  
1954 ◽  
Vol 6 (11) ◽  
pp. 1280-1281 ◽  
Author(s):  
S. Weinig ◽  
E. S. Machlin
Keyword(s):  
Martensitic Transformations ◽  
Ti Alloy

Properties of WNiFe-95 pseudoalloy sintered from electroerosive powders obtained in kerosene

2021 ◽  
pp. 117-121
Author(s):  
E.V. Ageeva
Keyword(s):  
Spark Plasma Sintering ◽  
High Performance ◽  
Experimental Studies ◽  
Structure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Composition Structure ◽  
Sintering Method ◽  
Favorable Structure ◽  
Low Porosity

The results of experimental studies of the composition, structure, and properties of WNiFe-95 pseudoalloy sintered from electroerosive powders obtained in lighting kerosene are presented. It is shown that the use of the spark plasma sintering method to produce products from powder obtained by electrodispersing of this pseudoalloy will ensure high performance of parts due to the surface uniformity, favorable structure and low porosity of the product.

Structure of surface of powder TiNi-based alloy obtained by diffusion sintering method

2020 ◽  
pp. 124-130
Author(s):  
S.G. Anikeev ◽  
◽  
N.V. Artyukhova ◽  
V.N. Khodorenko ◽  
M.I. Kaftaranova ◽  
...  
Keyword(s):  
Diffusion Sintering ◽  
Sintering Method

Preparation of soft magnetic alloys Fe100−x−ySixPy (0

2004 ◽  
Vol 281 (1) ◽  
pp. 124-134 ◽  
Author(s):  
L. Anestiev ◽  
M. De Wulf ◽  
L. Froyen ◽  
L. Dupre ◽  
J. Melkebeek
Keyword(s):  
Solid Phase ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Phase Diffusion ◽  
Soft Magnetic Alloys ◽  
Diffusion Sintering ◽  
Sintering Method

scholarly journals Electrode Bonding of Chromium Disilicide Thermoelectric Elements with Solid Diffusion-Sintering Method

2004 ◽  
Vol 124 (4) ◽  
pp. 317-318
Author(s):  
Takenobu Kajikawa ◽  
Shinya Suzuki ◽  
Takahiro Yokoyama ◽  
Hiroyuki Takazawa
Keyword(s):  
Solid Diffusion ◽  
Diffusion Sintering ◽  
Sintering Method

Shock consolidation of Ni-Ti alloy powder

1986 ◽  
Vol 44 ◽  
pp. 430-431
Author(s):  
Naresh N. Thadhani ◽  
Thad Vreeland ◽  
Thomas J. Ahrens
Keyword(s):  
Alloy Powder ◽  
Amorphous Material ◽  
Ti Alloy ◽  
Two Phase ◽  
Near Surface ◽  
Optical Micrograph ◽  
Shock Compaction ◽  
Powder Particles ◽  
Ti Powder ◽  
Rapidly Solidified

A spherically-shaped, microcrystalline Ni-Ti alloy powder having fairly nonhomogeneous particle size distribution and chemical composition was consolidated with shock input energy of 316 kJ/kg. In the process of consolidation, shock energy is preferentially input at particle surfaces, resulting in melting of near-surface material and interparticle welding. The Ni-Ti powder particles were 2-60 μm in diameter (Fig. 1). About 30-40% of the powder particles were Ni-65wt% and balance were Ni-45wt%Ti (estimated by EMPA).Upon shock compaction, the two phase Ni-Ti powder particles were bonded together by the interparticle melt which rapidly solidified, usually to amorphous material. Fig. 2 is an optical micrograph (in plane of shock) of the consolidated Ni-Ti alloy powder, showing the particles with different etching contrast.

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