scholarly journals Rapid Solidification Microstructure and Carbide Precipitation Behavior in Electron Beam Melted High-Speed Steel

2020 ◽  
Vol 51 (5) ◽  
pp. 2411-2429 ◽  
Author(s):  
J. Jin ◽  
R. Gao ◽  
H. Peng ◽  
H. Guo ◽  
S. Gong ◽  
...  
Keyword(s):  
Electron Beam ◽  
Rapid Solidification ◽  
High Speed ◽  
High Speed Steel ◽  
Carbide Precipitation ◽  
Solidification Microstructure ◽  
Precipitation Behavior

Effect of Magnetic Field Strength on Carbide Precipitation Behavior in W6Mo5Cr4V3 High Speed Steel during Medium Temperature Tempering

2016 ◽  
Vol 709 ◽  
pp. 15-18 ◽  
Author(s):  
Yan Wu ◽  
Zhi Wei Zhang ◽  
Qian Wang ◽  
Na Xiao ◽  
Xiang Zhao
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Applied Magnetic Field ◽  
High Speed ◽  
High Speed Steel ◽  
Carbide Precipitation ◽  
Precipitation Behavior ◽  
Medium Temperature ◽  
The Magnetic Field

Effect of magnetic field strength on carbide precipitation behavior in W6Mo5Cr4V3 highspeed steel during medium temperature tempering was investigated. The applied magnetic field promoted the precipitation and refinement of M6C and MC carbides at boundaries and in the grain interior, but maximum spheroidization occurred for those M6C carbides precipitated at boundaries, the stronger the magnetic field strength, the stronger the spheroidization effect. The high magnetic field hinders the precipitation of M2C type carbides, and the M2C type carbides basically disappear when applying the magnetic field.

Unusual Rapidity of Electron Beam Transient Tempering

1986 ◽  
Vol 80 ◽  
Author(s):  
Anjum Tauqir ◽  
Peter R. Strutt
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Beam ◽  
Thermal Treatment ◽  
Rapid Solidification ◽  
High Speed ◽  
Defect Cluster ◽  
High Concentration ◽  
Transmission Electron ◽  
Nucleation Sites

AbstractElectron beam rapid solidification of molybdenum-base high speed steels results in quenched-in metastable phases containing a high concentration of alloying elements. Thermal reprocessing of such material by momentary interaction with the electron beam results in decomposition of martensite at a rate ≈ 100 times faster than that occurring during conventional thermal treatment. It is postulated that this arises from a high concentration of 'defect cluster nucleation sites' during the rapid up-quenching. The product of short thermal treatment is a dispersion of 2–5 nm very fine precipitates identified using transmission electron microscopy as MC type carbides.

Prediction of Influences of Co, Ni, and W Elements on Carbide Precipitation Behavior in Fe-C-V-Cr-Mo Based High Speed Steels

2018 ◽  
Vol 89 (10) ◽  
pp. 1800172 ◽  
Author(s):  
Hongwei Zhang ◽  
Keiji Nakajima ◽  
Mengmeng Su ◽  
Hiroyuki Shibata ◽  
Peter Hedström ◽  
...  
Keyword(s):  
High Speed ◽  
Carbide Precipitation ◽  
Precipitation Behavior

Precipitation behavior of boron-carbide hard phase comprising a new high-boron high-speed steel

2019 ◽  
Vol 6 (10) ◽  
pp. 106516
Author(s):  
Zhentao Yuan ◽  
Chong Xiaoyu ◽  
Sui Yudong ◽  
Yehua Jiang ◽  
Zhang Yannan
Keyword(s):  
Boron Carbide ◽  
High Speed ◽  
High Speed Steel ◽  
Hard Phase ◽  
Precipitation Behavior ◽  
High Boron
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