Results 81 to 90 of about 445 (113)

Carbides in low-temperature-carburized stainless steels

Acta Materialia, 2004
Abstract A novel, low-temperature (470 °C) gas-phase carburization treatment, developed by the Swagelok Company, increases the surface hardness of 316-type austenitic stainless steels from ≈200 to ≈1000HV25 via a colossal supersaturation of up to 12 at.% carbon in solid solution. Upon extended treatment, carbide precipitation does eventually occur.
F Ernst, Y Cao, G.M Michal
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Mechanical design using low-temperature carburization

JOM, 2008
Fluid systems in a variety of industries use tube fittings to readily install leak-free connections. Robust tube-fitting performance depends on adequate differential hardness, the gripping element on the tube, and a guided plastic deformation of the tube-gripping components.
P. C. Williams, S. R. Collins
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High-Temperature Alloys for Application in Carburizing Environments

CORROSION 1984, 1984
Abstract The carburization resistance of a variety of commercial, wrought alloys ranging from stainless steels to nickel- and cobalt-base superalloys was investigated by performing laboratory tests in a carburizing environment at 871°, 927°, and 982°C (1600°, 1700°, and 1800°F).
G. Y. Lai, M. F. Rothman
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Effects of Temperature on the Fracture Toughness of Carburizing Steels for High-Temperature Applications

Journal of Testing and Evaluation, 1983
Abstract The fracture toughness of steels with good retention of hardness at elevated temperatures (CarTech EX00053, Timken CBS 600 and 1000M, and Vasco X-2M) was compared with that of conventional carburizing steels (EX55, AISI 4820, 8620, and 9315). The short-rod method was used to determine short rod/short bar fracture toughness KIcSR
RA Cutler, WC Leslie
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Effects of Testing Temperature on the Fatigue Behavior of Carburized Steel

SAE Technical Paper Series, 2005
<div class="htmlview paragraph">The effects of elevated testing temperature on the fatigue behavior of carburized steel were evaluated by testing modified Brügger bending fatigue specimens at room temperature, 90 °C and 150 °C. SAE <a href="http://www.sae.org/technical/papers/4023" target="_blank">4023</a>, SAE <a href="http://www ...
Dustin A. Turnquist, David K. Matlock, John G. Speer, George Krauss   +3 more
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Low-Temperature Carburization of Austenitic Stainless Steels

2014
Abstract Low-temperature carburization hardens the surface of austenitic stainless steels through the diffusion of interstitial carbon without the formation of carbides. This article provides an overview on austenitic stainless steels and low-temperature carburization.
S.R. Collins, P.C. Williams, S.V. Marx, A. Heuer, F. Ernst, H. Kahn   +5 more
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Acceleration effect of cobalt on carburization of tungsten at low temperature

Journal of Alloys and Compounds, 2018
Abstract The acceleration effect of cobalt on carburization of tungsten at low temperatures was studied by a series of experiments of W, C and Co reactions and theoretical evaluations. Due to Co addition, the formation temperature of WC was greatly reduced (e.g. a decrease from 1300 °C to 850 °C by addition of 1.0 wt% Co).
Wangbin Zhan, Haibin Wang, Shuhua Liang, Xuemei Liu, Xiaoyan Song   +4 more
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Properties of steels after high-temperature vacuum carburizing

Metal Science and Heat Treatment, 1980
1. High-temperature vacuum carburizing provides higher strength of the core of machine parts made of alloy steels as compared with standard carburizing. The variation of the ductile characteristics is more complex: The reduction in cross-sectional area remains unchanged for steel 19KhGN but increases for steels 20KhGN and 16KhG, while the ...
M. A. Krishtal, S. N. Tsepov
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Effect of Carburization Time and Carburization Temperature on Carburization of Mild Steel Using Carbon Nanotubes Obtained from a Horizontal CVD Reactor

Key Engineering Materials
This study investigates the effectiveness of carbon nanotubes (CNTs) in enhancing the surface hardness of mild steel through carburization. CNTs were synthesized via chemical vapor deposition at 700°C using iron nitrate and cobalt nitrate as precursors on CaCO₃ support. Acetylene was used as the carbon source and nitrogen as the inert gas.
Ajoke Sherifat Hassan, Ayo Samuel Afolabi, Michael Olawale Daramola   +2 more
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Pitting Resistance of Some High Temperature Carburized Cases

SAE Technical Paper Series, 1978
<div class="htmlview paragraph">Surface type gear pitting failures were produced on a geared roller test machine and the pitting life data was statistically analyzed by a method that accounts for or minimizes the influence of variables that determine the fatigue environment.
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