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Embrittlement mechanism in a low-carbon steel at

Mar 01, 2019 · Embrittlement behaviors were studied in a cast steel that bears a relatively large proportion of alloying elements (Mn, Cu, Nb, Ni) at intermediate temperatures. A low-carbon cast steel was heated to 1673 K (1,400 °C) of 10 K/s, then cooled to 673873 K of 10 K/s. Tensile tests were performed at the target temperature. Hydrogen Embrittlement - Heat Treat Doctorre-diffuse out of the steel, and ductility is restored. Performing an embrittlement relief, or hydrogen bake out cycle (the term bake-out involves both diffusion within the metal and outgassing) is a powerful method in eliminating hydrogen before damage can occur. Some of the key variables include temperature, time

Hydrogen Embrittlement in Fasteners - Bolt Council

Fundamentals of hydrogen embrittlement in steel fasteners S. Brahimi Introduction High strength mechanical steel fasteners are broadly characterized by tensile strengths in the range of 1,000 2,000 MPa (150 300 ksi), and are often used in critical applications such as in Hydrogen embrittlement of low carbon structural steel at Jan 13, 2020 · Hydrogen embrittlement of low carbon structural steel at macro-, micro- and nano-levels alloy steels with varying percentage content of Ni by the electrochemical permeation method in hydrogen charging and temperature conditions. The variation in the diffusion coefficient of hydrogen was observed with varying contents of Nickel in steel Precipitation behavior of type 347H heat-resistant itic steel were classied as intragranular carbide though TABLE I. Chemical composition of the explored type 347H austenitic steel (in wt%). Element C Cr Ni Nb N Mn Mo Fe wt% 0.06 17.60 10.71 0.54 0.01 1.59 0.12 Balance Y. Zhou et al.:Precipitation behavior of type 347H heat-resistant austenitic steel during long-term high-temperature aging

Steels for Cryogenic and Low-Temperature Service ::Total

The only alloy steel recommended for cryogenic service is 9% nickel steel. It is satisfactory for service down to -195°C and is used for transport and storage of cryogenics because of its low cost and ease of fabrication. Other alloy steels are suitable for service in the low-temperature range. The steels A201 and T-1 can suffice to -45°C The Influence of Manganese in Steel - Industrial HeatingApr 29, 2010 · 19. In combination with nitrogen, has a solid-solution hardening effect and improves high-temperature properties 20. Extends the range of use of low-carbon steels 21. Has a strong influence on the pearlite morphology of high-carbon steels 22. Extends the range of use of high-carbon steels through its grain-refining and pearlite-refining actions 23. levated-Temperature Characteristics of Engineering maximum service temperature for carbon-molyb­ denum steels is about 450 'C (850 "F). Chromium-Molybdenum Steels. Creep-re­ sistant low-alloy steels usually contain 0.5 to 1% Mo for enhanced creep strength, along with chro­ mium contents between 0.5 and 9% for improved corrosion resistance, rupture ductility, and resis­ tance against

Hydrogen embrittlement in quenched and tempered

Hydrogen embrittlement in quenched and tempered 9%Ni steel suggested that retained austenite increased low temperature toughness in 9% Ni steel by scavenging carbon and other deleterious elements from the ferritic matrix. Strife and heat treatment in order to improve the low temperature toughness of 9% Ni steel [4].