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Improving the bending toughness of Al-Si coated press-hardened steel by tailoring coating thickness
Scripta Materialia, 2021Abstract A ferrite layer is formed between the outer intermetallics layers and the martensite substrate during the hot stamping process of Al-Si coated press-hardened steel (PHS). Unexpectedly, it is found here that the ferrite layer does not effectively prevent brittle cracks propagating continuously from the intermetallics to the martensite ...
Z. Wang, Z.H. Cao, J.F. Wang, M.X. Huang
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Oxidation resistance of (Ti, Al, Si)N coatings in air
Surface and Coatings Technology, 1998We prepared TiN-based multicomponent hard coatings by combined d.c. and r.f. magnetron sputtering with different contents of Ti, Al, Zr and Si on high speed steel substrates at 300°C. These coatings, with thicknesses ranging from 1 to 3 μm, were annealed in air at temperatures between 500 and 850°C in order to obtain information on their oxidation ...
F. Vaz +4 more
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Two step coating of a hypereutectic PM Al–Si alloy
Materials Letters, 2010Abstract The aim of the present work was to combine the high strength of Al–Si alloys produced via Rapid Solidification (RS) and Spray Forming (SF) with a wear resistant surface coating, designed for high temperature use. The surface coating, composed mainly of nickel and chromium, was applied in a two step process: plasma spray followed by laser ...
M. Gurutze Pérez Artieda +4 more
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Thermal fatigue behaviour of Al–Si coated Inconel 713 LC
Surface Engineering, 2016The effect of single and two-stage Si modified aluminide coatings on thermal fatigue behaviour of nickel based superalloy Inconel 713LC was examined. Specimens were loaded under test condition of heating to 1100°C followed by cooling to25°C. The experimental results showed that the coatings increased thermal fatigue resistance in both crack initiation
M. Mansuri +3 more
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Wear Behaviour of Al-Si and Zn Coated 22MnB5 in Hot Stamping
Advanced Materials Research, 2014Hot stamping of quenchenable high strength steels represents the most promising forming technology for the manufacturing of safety and crash relevant car parts. In such process, the manganese-boron steel 22MnB5 is homogeneously austenitized, formed and subsequently quenched in one process step, so that complex geometric structural components can be ...
BARIANI, PAOLO FRANCESCO +3 more
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Corrosion behavior of Al-Si-Mg coated hot-press-forming steel
Corrosion Science, 2021Abstract This study introduces enhanced corrosion performance of the Al-Si-Mg coated 22MnB5 boron steel. Structural changes of the coating after hot-dip-aluminizing and hot-press-forming processes with the presence of Mg included compacter surface with Mg segregation and thicker crack-free layer.
Changkyu Kim +4 more
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Surface review and letters, 2019
In this paper, TiC reinforced composite coatings were fabricated on TC4 alloy by laser cladding Ti,Al,Si, TiC and Y2O3 mixed powders. Microstructures and properties of the clad coatings with and without Y2O3 were discussed by comparative experiments. SEM,
Hailun Zhang +4 more
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In this paper, TiC reinforced composite coatings were fabricated on TC4 alloy by laser cladding Ti,Al,Si, TiC and Y2O3 mixed powders. Microstructures and properties of the clad coatings with and without Y2O3 were discussed by comparative experiments. SEM,
Hailun Zhang +4 more
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Oxidation of Metals, 2011
Oxidation resistance of chromium steels is due to the formation of Cr2O3 on the surface. However, this surface layer destabilizes above 1,000 °C and does not protect the metal. In this study, three types of coatings were applied to AISI 304 stainless steel (SS), and the microstructure and oxidation resistance of the coatings were investigated. Aluminum
Morteza Zandrahimi +2 more
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Oxidation resistance of chromium steels is due to the formation of Cr2O3 on the surface. However, this surface layer destabilizes above 1,000 °C and does not protect the metal. In this study, three types of coatings were applied to AISI 304 stainless steel (SS), and the microstructure and oxidation resistance of the coatings were investigated. Aluminum
Morteza Zandrahimi +2 more
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Al-Si and Al-Si-Y coatings deposited by HS-PVD for the oxidation protection of γ-TiAl
Surface and Coatings Technology, 2018Abstract Many attempts have been made to extend the service temperatures of lightweight materials based on γ-TiAl alloys due to their insufficient oxidation resistance at T > 850 °C for turbine applications. Among them, deposition of high-temperature oxidation protective coatings has been proved to be a promising approach.
K. Bobzin +3 more
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Wear Behavior of Plasma Spayed Al-Si/TiB2/h-BN Composite Coating
International Thermal Spray Conference, 2009Abstract In this work, mechanically alloyed Al–12Si/TiB2/h-BN composite powder was deposited onto an aluminum substrate by atmospheric plasma spraying. The results revealed that the mechanical alloying (MA) process has a significant effect on composite powder morphology and in-situ reaction intensity between the selective powders during ...
Grund, T. +4 more
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