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High power diode laser surface hardening of AISI 4130; statistical modelling and optimization
Optics and Laser Technology, 2019Laser surface hardening of AISI 4130 carbon steel was conducted with a high power diode laser using Response Surface Methodology. Scanning speed, laser power and focal plane position were considered as the input process variables and cross sectional ...
M. Moradi, M. Karamimoghadam
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Hardening the surface of austenitic steels by strain hardening
Metal Science and Heat Treatment, 19711. The carrying capacity in terms of permissible stress (σ0, 2) of steels Kh18N10T and Kh21N5AG7 under conditions of uniaxial static tension increases 50% down to −253° as the result of surface hardening. 2. For hardened steels Kh18N10T and Kh21N5AG7 σ b n /σn > 1 and σ b n /σ0.2 > 1 with Kt=3.0 in the range of 20 to −253° C. 3.
D. V. Lebedev, B. M. Ovsyannikov
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Surface hardening of precipitation-hardening nonmagnetic steels
Metal Science and Heat Treatment, 19731. Precipitation-hardening nonmagnetic steels of the Fe−Mn−Ni system can be surface hardened by nitriding and also by work hardening of the surface. Surface layers with an elevated hardness to a depth of 0.3 mm can be obtained by nitriding of high-strength nonmagnetic steel 40G14N9Kh3YuF2. The results of comparative wear resistance tests showed that
V. M. Blinov +4 more
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Optics and Laser Technology, 2019
Laser surface hardening process is one of the new technologies for improving the surface of metals, especially steels, which in recent decades has received a lot of attention.
M. Moradi +3 more
semanticscholar +1 more source
Laser surface hardening process is one of the new technologies for improving the surface of metals, especially steels, which in recent decades has received a lot of attention.
M. Moradi +3 more
semanticscholar +1 more source
Surface hardening of case hardened steel by rolling
Metal Science and Heat Treatment, 19651. Rolling of case hardened quenched steel produces an additionally hardened layer as thick as 1 mm. At the same time, the hardness increases by 100 HV units. 2. The effect of rolling depends on the type of steel, the preliminary heat treatment, and the value of the contact stress. 3.
G. N. Epshtein, I. V. Paisov
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Optics and Laser Technology, 2019
In the present study, Nd:YAG laser surface hardening of AISI 431 stainless steel was performed. The effect of process parameters was investigated on the geometrical dimensions of the hardened zone, micro hardness distribution, and microstructure of AISI ...
A. Khorram +3 more
semanticscholar +1 more source
In the present study, Nd:YAG laser surface hardening of AISI 431 stainless steel was performed. The effect of process parameters was investigated on the geometrical dimensions of the hardened zone, micro hardness distribution, and microstructure of AISI ...
A. Khorram +3 more
semanticscholar +1 more source
Surface hardening of metals at room temperature by nanoparticle-laden cavitating waterjets
, 2020Reported in this paper is a novel and facile room-temperature surface-hardening technique, capable of providing five-fold increase in the hardness of an aluminum alloy, by utilizing a cavitating waterjet laden with hard nanoparticles. Microstructural and
Xingliang He +7 more
semanticscholar +1 more source
Optik (Stuttgart), 2019
In the present study, the laser surface hardening of AISI 4130 was conducted using a continues wave diode laser with a maximum power of 1600 W.
M. Moradi +2 more
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In the present study, the laser surface hardening of AISI 4130 was conducted using a continues wave diode laser with a maximum power of 1600 W.
M. Moradi +2 more
semanticscholar +1 more source
Surface hardening of FCC phase high-entropy alloy system by powder-pack boriding
Surface & Coatings Technology, 2019Face centred cubic (fcc) phase high-entropy alloys (HEA) exhibit a higher ductility compared to body centred cubic (bcc) phase or multiphase HEA systems. However, low hardness and low wear resistance prevent tribological applications.
T. Lindner +3 more
semanticscholar +1 more source
2015
Mechanical components often require surface treatments to meet application demands. This chapter describes several surface hardening treatments for steel and their effect on microstructure, composition, and properties. It discusses flame hardening, induction heating, carburizing, nitriding, carbonitriding, and nitrocarburizing.
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Mechanical components often require surface treatments to meet application demands. This chapter describes several surface hardening treatments for steel and their effect on microstructure, composition, and properties. It discusses flame hardening, induction heating, carburizing, nitriding, carbonitriding, and nitrocarburizing.
openaire +1 more source