Results 181 to 190 of about 3,070 (230)

Austenite transformation in the intercritical temperature range

Metal Science and Heat Treatment, 1982
1. Austenitization temperature has the main effect on the amount of α-phase formed in the intercritical temperature range. As this temperature increases the amount of α-phase increases, approaching the calculated amount determined by the intercept rule. 2.
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Elevated temperature irradiation hardening in austenitic stainless steel

Acta Metallurgica, 1968
Abstract The nature and magnitude of radiation hardening in an 18-8 type austenitic stainless steel were investigated after a high neutron exposure (1.4 × 1022 n/cm2, E > 0.18 MeV) near one-half the absolute melting temperature (532°C). Transmission electron microscopy was used to reveal substructural features prior to tensile testing over the ...
J.J. Holmes, R.E. Robbins, J.L. Brimhall, B. Mastel   +3 more
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High-Temperature Oxidation Resistance of Austenitic Stainless Steels

Key Engineering Materials, 2013
The oxidation kinetic curves of four kinds of austenitic stainless steel at 700°C was measured by weighting method. It is showed that the oxidation curves of those austenitic stainless steels follow the parabolic law. The mass gain of 800Al steel. is the least of all.
Dong Sheng Li, Dan Li, Hong Dou, Pei Gao, Yu Liu, Xiao Jun Chen, Xin Chun Jiang, Jing Juan Pei   +7 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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Materialometrical approach of predicting the austenite formation temperatures

Materials Science and Engineering: A, 2006
Abstract Artificial neural network model—one of materialometrical approaches was developed basing on experimental data collected from domestic and foreign literatures to predict the austenite formation temperatures (Ac3 and Ac1) of steels. Scatters diagrams and statistical criteria showed that the prediction performance of artificial neural network ...
Wei You, Weihong Xu, Bingzhe Bai, Hongsheng Fang   +3 more
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Austenite grain size and the martensite-start temperature

Scripta Materialia, 2009
New experimental evidence confirms the dependence of the martensite-start temperature on the austenite grain size. The Fisher model for the geometrical partitioning of austenite grains by plates of martensite is used here to develop a theory to explain the observations, based on the ability to detect transformation as a function of the austenite grain ...
H YANG, H BHADESHIA
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Thermal fatigue of austenitic steels at cryogenic temperatures

Strength of Materials, 1975
1. A method has been developed that permits comparative thermal-fatigue tests at cryogenic temperatures. 2. Thermal cycling under load has a substantial effect on the strength of metals, lowering the strength 18–22% in 104 cycles. 3. Ductile Cr−Ni austenitic steel 12Kh18N10T is the least sensitive to thermal cycling.
G. A. Stepanov, V. I. Skol'tsov
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High temperature crack growth in austenitic weld metal

Engineering Fracture Mechanics, 1989
Abstract Type 308 stainless steel containing niobium is often used in high temperature applications. Welding is normally resorted to for joining purposes in such components. The crack growth behaviour in the weldment of 308 S.S. has been studied in the temperature range of 600 to 800°C.
M. Kamaraj, V.M. Radhakrishnan
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Low-Temperature Properties of Austenitic Ductile Irons

1963
The low-temperature impact toughness of the existing grades of austenitic ductile iron, as covered by ASTM Specification A-439, all decrease with decrease in temperature, as illustrated by the Charpy V-notch values in Table I. At -320°F the impact values fall within the range 3,5 to 11 ft-lb, D-5 grade having the highest value.
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Intermediate temperature decomposition of supercooled high nitrogen austenite

International Heat Treatment and Surface Engineering, 2013
The mechanism of decomposition transformation of Fe–N the austenite system has been investigated. An improved process of austenitic nitriding, achieved by applying controlled nitrogen potential theory, allowed high nitrogen austenite samples with a uniform nitrogen concentration to be produced. The key point of this gas nitriding process is to keep the
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