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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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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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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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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 trapping in high strength 0Cr16Ni5Mo martensitic stainless steel
Journal of Central South University, 2015Hydrogen trapping behavior has been investigated by means of thermal desorption spectroscopy (TDS) for a high strength steel after it was tempered at the temperatures of 430 °C, 500 °C and 520 °C, respectively. The loss of ductility was characterized by slow strain rate test (SSRT) and microscopic observation.
Yong-wei Sun, Ji-zhi Chen, Jun Liu
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