Loss of alloying elements in the melting of high-speed steel

Metallurgist ◽  
1970 ◽  
Vol 14 (5) ◽  
pp. 304-306
Author(s):  
N. M. Chuiko ◽  
M. I. Gasik ◽  
N. T. Zaozernyl ◽  
G. P. Parkhomenko
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements

Plasma Surface Alloying W-Mo Low-Alloy HSS

2005 ◽  
Vol 475-479 ◽  
pp. 3955-3958
Author(s):  
Jin Yong Xu ◽  
Yan Ping Liu ◽  
Yuan Gao ◽  
Zhong Xu
Keyword(s):  
High Speed ◽  
Surface Hardness ◽  
High Speed Steel ◽  
Alloying Elements ◽  
Work Piece ◽  
Test Results ◽  
Surface Alloying ◽  
Plasma Surface ◽  
The Common ◽  
Plasma Surface Alloying

The plasma surface alloying low-alloy high speed steel (HSS) is carried out in vacuum chamber where a source electrode (W-Mo) and a work piece are properly placed. By using the sputter of glow-discharge, under the common function of electric field and temperature field, ?????? the desired alloying elements (W- Mo) are sputtered from the source cathode, traveling toward the substrate. Subsequently the alloying elements deposit onto the surface of the substrate, forming alloy diffusion layer which the depth may vary from several micron to several hundreds micron. In the end a surface low-alloy HSS steel would be produced after ultra-saturation ion carbonization. The composition of the alloyed layer is equal or similar with it of low-alloy HSS. The carbonized layer, without coarse eutectic ledeburite structure, possesses high density of finely and dispersed alloy carbides with tungsten equivalent 10% above and a significant improvement in surface hardness and wear resistance. The principle of plasma surface alloying and its test results and commercial products application are introduced in this paper.

scholarly journals Features of technology for manufacturing cast toolbills from rapid-cutting steel R6M5

2020 ◽  
pp. 68-74
Author(s):  
F. I. Rudnitsky ◽  
L. P. Dolgiy
Keyword(s):  
Computer Simulation ◽  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements ◽  
Steel R6m5 ◽  
Gating System ◽  
Cutting Steel ◽  
Gear Shaping

The article presents the results of computer simulation of the crystallization of castings from high-speed steel R6M5, intended for the manufacture of cutters and gear shaping tools in the conditions of OJSC “Minsk Gear Plant”. The use of modeling made it possible to optimize the gating system, reduce this volume of the profitable part by 30–35 % and increase the yield of suitable casting, which made it possible to reduce the consumption of expensive alloying elements introduced into the melt to compensate for burnout during melting and casting.

scholarly journals Effects of alloying elements on microstructure, hardness, and fracture toughness of centrifugally cast high-speed steel rolls

2005 ◽  
Vol 36 (1) ◽  
pp. 87-97 ◽  
Author(s):  
Chang Kyu Kim ◽  
Yong Chan Kim ◽  
Jong Il Park ◽  
Sunghak Lee ◽  
Nack J. Kim ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements ◽  
Centrifugally Cast ◽  
Steel Rolls

The Role of Alloying Elements in High Speed Steel Type Cast Irons

1999 ◽  
Vol 11 (5) ◽  
pp. 297-301 ◽  
Author(s):  
Kaoru Yamamoto ◽  
Toshiro Harakawa ◽  
Keisaku Ogi
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements ◽  
Cast Irons ◽  
Steel Type

Surface Age-Hardened High Speed Steel with High Co Content Formed on Undecarburized Carbon Steel

2005 ◽  
Vol 475-479 ◽  
pp. 187-190 ◽  
Author(s):  
Yan Mei Zhang ◽  
Yan Ping Liu ◽  
Zhong Hou Li ◽  
Zhong Xu
Keyword(s):  
Carbon Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements ◽  
Age Hardening ◽  
Alloyed Layer ◽  
Low Carbon ◽  
Heat Treated ◽  
Glow Plasma ◽  
Plasma Surface Alloying Technique

Tungsten, molybdenum and cobalt were co-diffused into the surface of undecarburized 45 steel at 1150 °C for 6 hours by a double glow plasma surface alloying technique. A Fe-W-Mo-Co type gradient surface alloyed layer with very low carbon content was formed. Thickness of the surface alloyed layer is 225.2μm. Concentrations of alloying elements Co, W and Mo in the alloyed layer are mostly ranged from 21 to 14 wt.%, 12 to 6 wt.% and 7 to 5 wt.%, respectively. The concentrations of alloying elements basically meet the requirements of W11Mo7Co23 type age-hardened high speed steel. The alloyed samples were solution heat treated, ageing and high-temperature tempering. The results show that the surface alloyed layer formed on 45 steel exhibits very strong age-hardening property and anti-temper softening ability as the metallurgical age-hardened high speed steel, the surface age-hardened high speed steel on ingot and decarburized carbon steel.

Structure and Phase Transformations upon Carburisation of High-Speed Steel

2006 ◽  
Vol 249 ◽  
pp. 269-274 ◽  
Author(s):  
Alexander S. Chaus
Keyword(s):  
Phase Transformations ◽  
High Speed ◽  
Metallic Matrix ◽  
High Speed Steel ◽  
Temperature Treatment ◽  
Alloying Elements ◽  
High Temperature Treatment ◽  
X Ray Diffraction ◽  
Carbide Phases ◽  
Structure And Phase Transformations

Diffusion effects of alloying elements on the structure and phase transformation during thermo-chemical treatment in AISI M2 high-speed steel additionally alloyed with vanadium, titanium and niobium have been investigated. The results of metallographic, X-ray diffraction, and electron microprobe analyses of the steels after casting, annealing, hot plastic deformation, carburising, quenching and tempering are discussed. The redistribution of alloying elements between the metallic matrix and carbide phases upon high-temperature treatment due to diffusion was shown to result in the structure and phase transformations in the steels studied.

Reducing the content of alloying elements in high-speed steel during heating in salt baths

1985 ◽  
Vol 27 (7) ◽  
pp. 531-533
Author(s):  
I. P. Kandalovskii ◽  
F. F. Kirillov ◽  
V. I. Dobler
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Alloying Elements
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