Optimal rhenium content in hard alloys used to cut high-temperature steel and alloys

2013 ◽  
Vol 33 (8) ◽  
pp. 499-503 ◽  
Author(s):  
A. M. Adaskin ◽  
A. I. Anikeev ◽  
A. S. Vershchaka ◽  
V. V. Kashirtsev ◽  
I. Yu. Sapronov
Keyword(s):  
High Temperature ◽  
Hard Alloys ◽  
Rhenium Content

Preparation of WC-TiC-Ni3Al-CaF2 functionally graded self-lubricating tool material by microwave sintering and its cutting performance

2020 ◽  
Vol 39 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Siwen Tang ◽  
Rui Wang ◽  
Pengfei Liu ◽  
Qiulin Niu ◽  
Guoqing Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Microwave Heating ◽  
Cutting Performance ◽  
Conventional Heating ◽  
Hard Alloys ◽  
Dry Cutting ◽  
Temperature Oxidation ◽  
Lubricating Material ◽  
Heating Technology

AbstractWith the concern of the environment, green dry cutting technology is getting more and more attention and self-lubricating tool technology plays an important role in dry cutting. Due to the demand for high temperature performance of tools during dry cutting process, cemented carbide with Ni3Al as the binder phase has received extensive attention due to its excellent high temperature strength and high temperature oxidation resistance. In this paper, WC-TiC-Ni3Al-CaF2 graded self-lubricating material and tools were prepared by microwave heating method, and its microstructure, mechanical properties and cutting performance were studied. Results show that gradient self-lubricating material can be quickly prepared by microwave heating technology, and the strength is equivalent to that of conventional heating technology. CaF2 not only plays a role in self-lubrication, but also refines the grain of the material. A reasonable gradient design can improve the mechanical properties of the material. When the gradient distribution exponent is n1 = 2, the material has high mechanical properties. Cutting experiments show that the WC-TiC-Ni3Al-CaF2 functional gradient self-lubricating tool has better cutting performance than the homogeneous WC-TiC-Ni3Al hard alloys.

Drilling hard alloys based on high-temperature tungsten carbides

2015 ◽  
Vol 56 (3) ◽  
pp. 319-324
Author(s):  
D. A. Zakharov ◽  
A. P. Amosov ◽  
A. V. Sal’nikov ◽  
M. A. Sal’nikov
Keyword(s):  
High Temperature ◽  
Hard Alloys ◽  
Tungsten Carbides

High-temperature friction and wear of titanium carbide hard alloys with an addition of a solid lubricant

1998 ◽  
Vol 37 (7-8) ◽  
pp. 421-424 ◽  
Author(s):  
Yu. G. Tkachenko ◽  
D. Z. Yurchenko ◽  
A. S. Sibel’ ◽  
L. M. Murzin
Keyword(s):  
High Temperature ◽  
Titanium Carbide ◽  
Friction And Wear ◽  
Solid Lubricant ◽  
Hard Alloys

scholarly journals Production of Mo2NiB2 Based Hard Alloys by Self-Propagating High-Temperature Synthesis

2019 ◽  
Vol 38 (2019) ◽  
pp. 683-691 ◽  
Author(s):  
Sevinch Rahimi Moghaddam ◽  
Bora Derin ◽  
Onuralp Yucel ◽  
M. Seref Sonmez ◽  
Meltem Sezen ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Cost ◽  
Absorption Spectrometry ◽  
Hard Alloys ◽  
X Ray Diffraction ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Modeling Software ◽  
Cast Alloys ◽  
Series Of Experiments

AbstractMo-Ni-B-Al as-cast alloys containing 35.5-58.7 wt% Mo, 23.0-57.6 wt% Ni, 3.3-5.2 wt% B, and 2.2-13.5 wt% Al were synthesized by Self-Propagating High-Temperature Synthesis (SHS) using a mixture of MoO3, NiO, B2O3 and Al powders in order to obtain low-cost Mo2 NiB2 containing hard materials. The first series of experiments were performed using 1.05 times the stoichiometric amount of Al. In the second series of experiments, FactSage thermochemical modeling software was used to minimize Al increasing the Mo2NiB2 formation in the as-cast alloys. The products were characterized by using atomic absorption spectrometry (AAS), X-ray diffraction (XRD), scanning electron microscopy (SEM) and micro-hardness techniques.

Oxidation resistance and high-temperature strength of WC-Co-Ni-Re(Mn) hard alloys

2006 ◽  
Vol 45 (7-8) ◽  
pp. 342-345 ◽  
Author(s):  
I. B. Panteleev ◽  
T. V. Lukashova ◽  
S. S. Ordan’yan
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Strength ◽  
Hard Alloys

Use of Electrothermal Explosion and Electro-Thermal Analyser (ETA-100) for the Study the Kinetics of Fast High-Temperature Reactions in SHS-Ceramic Systems

2010 ◽  
Vol 63 ◽  
pp. 203-212
Author(s):  
A.S. Shteinberg ◽  
A.A. Berlin
Keyword(s):  
High Temperature ◽  
Rate Constants ◽  
High Speed ◽  
Dissimilar Materials ◽  
Isothermal Kinetics ◽  
Hard Alloys ◽  
Wide Range ◽  
Static Conditions ◽  
The Impact ◽  
Kinetics Of

Due to the lack of specialty kinetic methods and instruments, the kinetics of fast hightemperature reactions SHS-ceramic systems has not been adequately studied. Recently, we have developed a number of methods of so-called non-isothermal kinetics (NIK) and designed instruments allowing one to obtain information about reactions of ceramic systems in a wide range of practically important temperatures and rates. The use of one of the NIK-methods (called electrothermal analysis based on the phenomena of electro thermal explosion) allows one to study kinetics of SHS of some ceramic materials characterized by the total reaction time ~ 10 μs. In ETE, both samples pressed from reagents powders or cylindrical samples made from tightly rolled foils were studied. The joule heating was accompanied by high-speed scanning of the non-stationary temperature field on its surface. Description and technical characteristics of the specialty device electrothermoanalyzer ETA-100 manufactured by ALOFT are given. Kinetic parameters of fast EM reactions for the temperatures up to 3600 K can be measured by ETE method using ETA-100. New kinetic data for fast high-temperature gasless SHS yielding individual and composite materials (including refractory carbides and borides of transition metals, silicon and boron carbides, some refractory oxides and hard alloys) are presented. At high-speed impact of the samples, the reaction rate constants were found to exceed the combustion rate constants (measured by ETA-100) by many orders of magnitude. It was concluded that the kinetic mechanisms of the corresponding fast reactions in the static conditions and under the impact are dramatically different. It was shown that SHS in ETE mode has a significant potential as a modern practical method to be used for welding of refractory and dissimilar materials, production of coarse superabrasives, etc.

scholarly journals Room Temperature Microplasticity and High Temperature Internal Friction of Mo2FeB2 Based Hard Alloys.

1998 ◽  
Vol 45 (6) ◽  
pp. 553-560 ◽  
Author(s):  
Teruaki Yagi ◽  
Ken-ichi Takagi ◽  
Nobuyuki Momozawa ◽  
Katsuhiro Nishiyama
Keyword(s):  
High Temperature ◽  
Internal Friction ◽  
Room Temperature ◽  
Hard Alloys
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