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Hydrogen Trapping in Some Automotive Martensitic Advanced High‐Strength Steels [PDF]
Advanced Engineering Materials, 2017 Hydrogen permeation experiments are used to investigate hydrogen trapping in commercial automotive martensitic advanced high‐strength steels. Hydrogen trapping increases with increasing mechanical strength, as indicated by (i) the decrease in the hydrogen diffusion coefficient, and (ii) the increase in reversible hydrogen trap density.
Jeffrey Venezuela +4 more
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Martensitic transformations in high-strength steels at aging
Russian Metallurgy (Metally), 2011The effect of heat treatment and elastic stresses on the texture of maraging NiTi-steels is studied. The interruption of the decomposition of martensite at the early stages is shown to be accompanied by the γ → α transformation, which proceeds upon cooling from the aging temperature and under elastic (σ < σ0.2) tensile stresses.
V. V. Berezovskaya, O. A. Bannykh
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Microstructural Characterization of Ultra-High Strength Martensitic Steels
Practical Metallography, 2018Abstract In the development of steels with increasing strength and toughness, ultra-high strength steel grades with a martensitic microstructure are gaining more importance. From the martensitic transformation product, however, strength-specific quantities derived from the former austenite grain cannot be accessed conveniently.
R. Esterl +4 more
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Mechanisms of steam oxidation in high strength martensitic steels
International Journal of Pressure Vessels and Piping, 2007Abstract The oxidation resistance of 9–12% chromium steels in steam-containing environments simulating the service conditions of steam power plant has been investigated for exposure times ranging from 1 h up to 10,000 h. The time-dependent changes in the complex structures of the scales were determined using optical microscopy.
P.J. Ennis, W.J. Quadakkers
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Hydrogen Assisted Tempered Martensite Embrittlement of Ultra High Strength Martensitic Steel
Materials Science Forum, 2016The demand for new materials that provide excellent structural performance while reducing weight and being cost-effectively manufactured is increasing. For applications with high strength requirements, ultra-high strength steels (UHSS) have been widely used. However, with such a high strength level, UHSS are very sensitive to the hydrogen that could be
T.C. Chen +5 more
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Design of a low-alloy high-strength and high-toughness martensitic steel
International Journal of Minerals, Metallurgy, and Materials, 2013To develop a high strength low alloy (HSLA) steel with high strength and high toughness, a series of martensitic steels were studied through alloying with various elements and thermodynamic simulation. The microstructure and mechanical properties of the designed steel were investigated by optical microscopy, scanning electron microscopy, tensile ...
Yan-jun Zhao +3 more
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Nanoscale Analyses of High-Nickel Concentration Martensitic High-Strength Steels
Metallurgical and Materials Transactions A, 2013Austenite reversion in martensitic steels is known to improve fracture toughness. This research focuses on characterizing mechanical properties and the microstructure of low-carbon, high-nickel steels containing 4.5 and 10 wt pct Ni after a QLT-type austenite reversion heat treatment: first, martensite is formed by quenching (Q) from a temperature in ...
Dieter Isheim +3 more
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A review of hydrogen embrittlement of martensitic advanced high-strength steels
Corrosion Reviews, 2016Abstract The martensitic advanced high-strength steels (MS-AHSS) are used to create fuel-efficient, crashworthy cars. Hydrogen embrittlement (HE) is an issue with high-strength steels; thus, the interaction of hydrogen with MS-AHSS needs to be studied. There are only a few published works on the HE of MS-AHSS.
Venezuela, Jeffrey +4 more
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