Microstructural evolution during liquid-phase sintering of high-speed steel-based composites containing TiN-coated Al2O3, TiC, or Al2O3 particles: influence on wear properties

1993 ◽  
Vol 28 (22) ◽  
pp. 6147-6154 ◽  
Author(s):  
C. Jouanny-Trésy ◽  
M. Vardavoulias ◽  
M. Jeandin
Keyword(s):  
Liquid Phase ◽  
Microstructural Evolution ◽  
High Speed ◽  
High Speed Steel ◽  
Liquid Phase Sintering ◽  
Wear Properties ◽  
Al2o3 Particles

Mechanism of Liquid Phase Sintering in Fe-Cu, Cu-Ag and High Speed Steel

1988 ◽  
pp. 465-470 ◽  
Author(s):  
Shigeaki Takajo ◽  
Masaki Kawano ◽  
Minoru Nitta ◽  
Wolfgang A. Kaysser ◽  
Günter Petzow
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
High Speed Steel ◽  
Liquid Phase Sintering

scholarly journals Behavior of liquid phase sintering of high speed steel powder compacts.

1986 ◽  
Vol 33 (8) ◽  
pp. 398-401 ◽  
Author(s):  
Shigeaki Takaji ◽  
Minoru Nitta ◽  
Masaki Kawano
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
High Speed Steel ◽  
Steel Powder ◽  
Liquid Phase Sintering ◽  
Powder Compacts

Sintering of AISI M3:2 High Speed Steel – Part II

2006 ◽  
Vol 530-531 ◽  
pp. 358-363 ◽  
Author(s):  
Oscar O. Araujo Filho ◽  
Maurício David Martins das Neves ◽  
João Franklin Liberati ◽  
Luís Carlos Elias da Silva ◽  
Lucio Salgado ◽  
...  
Keyword(s):  
Liquid Phase ◽  
High Speed ◽  
Sintering Temperature ◽  
Hot Isostatic Pressing ◽  
High Speed Steel ◽  
Steel Part ◽  
Liquid Phase Sintering ◽  
Processing Route ◽  
Tool Steels ◽  
Different Temperatures

Liquid phase sintering of high speed steels seems to be a cheaper processing route in the manufacturing of tool steels if compared to the well-known and expansive hot isostatic pressing high speed steels process. In a previous work a M3:2 high speed steel was vacuum sintered from irregular water atomized powders and had its sintering temperature determined. In this work the same powder was uniaxially cold compacted and vacuum sintered by adding some small quantity of graphite (0.3%C in weight) to prevent porosity and loss of carbon which result from the sintering cycle. The samples from all these experimental procedures were uniaxially cold compacted and vacuum sintered at five different temperatures and had its densities evaluated. The microstructure was evaluated using optical-electronic techniques in order to investigate the best range of sintering temperature. At least five parallel samples were tested to each condition of sintering.

Characteristic properties of AlTiN and TiN coated HSS materials

2015 ◽  
Vol 67 (2) ◽  
pp. 172-180 ◽  
Author(s):  
Mumin Sahin ◽  
Cenk Misirli ◽  
Dervis Özkan
Keyword(s):  
Surface Roughness ◽  
Tensile Strength ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Wear Properties ◽  
Content Type ◽  
X Ray ◽  
Number Of Cycles ◽  
Future Work

Purpose – The purpose of this paper is to examine mechanical and metallurgical properties of AlTiN- and TiN-coates high-speed steel (HSS) materials in detail. Design/methodology/approach – In this study, HSS steel parts have been processed through machining and have been coated with AlTiN and TiN on physical vapour deposition workbench at approximately 6,500°C for 4 hours. Tensile strength, fatigue strength, hardness tests for AlTiN- and TiN-coated HSS samples have been performed; moreover, energy dispersive X-ray spectroscopy and X-ray diffraction analysis and microstructure analysis have been made by scanning electron microscopy. The obtained results have been compared with uncoated HSS components. Findings – It was found that tensile strength of TiAlN- and TiN-coated HSS parts is higher than that of uncoated HSS parts. Highest tensile strength has been obtained from TiN-coated HSS parts. Number of cycles for failure of TiAlN- and TiN-coated HSS parts is higher than that for HSS parts. Particularly TiN-coated HSS parts have the most valuable fatigue results. However, surface roughness of fatigue samples may cause notch effect. For this reason, surface roughness of coated HSS parts is compared with that of uncoated ones. While the average surface roughness (Ra) of the uncoated samples was in the range of 0.40 μm, that of the AlTiN- and TiN-coated samples was in the range of 0.60 and 0.80 μm, respectively. Research limitations/implications – It would be interesting to search different coatings for cutting tools. It could be the good idea for future work to concentrate on wear properties of tool materials. Practical implications – The detailed mechanical and metallurgical results can be used to assess the AlTiN and TiN coating applications in HSS materials. Originality/value – This paper provides information on mechanical and metallurgical behaviour of AlTiN- and TiN-coated HSS materials and offers practical help for researchers and scientists working in the coating area.

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