Results 161 to 170 of about 13,701 (204)

Retained austenite in intercritically annealed HSLA steel

Metallography, 1987
Abstract The effects of processing parameters on austenite retention in intercritically annealed HSLA steels have been investigated. Low-temperature tempering was found to be necessary for successful tint etch of high-carbon martensite in dual-phase structure with sodium metabisulfite.
Q.Y. Long, D. Tseng, K. Tangri
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Retained Austenite and the Tempering of Martensite

Nature, 1960
THE decomposition of retained austenite as the second stage in the tempering of quenched steels is well recognized, and has been explored extensively. However, the role of retained austenite in the first stage tempering reaction has not been studied widely.
S. MATAS, R. F. HEHEMANN
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X-ray determination of retained austenite

Journal of Heat Treating, 1981
The variation of retained austenite content in heat treated steels is studied here by an X-ray diffraction technique. It is found that the retained austenite content in steel samples studied increases with the austenitizing temperature and decreases slowly with the tempering temperature up to 177 °C.
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Determination of retained austenite in bearing steel

Hyperfine Interactions, 1986
Mőssbauer effect experiments in scattering geometry were performed for gauging plates and bearings in order to measure the retained austenite content. The results, obtained from numerical calculations of Mossbauer spectra are compared with the X-ray diffraction measurements.
J. Suwalski, Z. Kucharski, M. Łukasiak, W. Luty   +3 more
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Retained Austenite

1999
Abstract This chapter addresses the issue of retained austenite in quenched carburized steels. It explains why retained austenite can be expected at the surface of case-hardened components, how to estimate the amount that will be present, and how to effectively stabilize or otherwise control it. It presents detailed images and data plots
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Modelling of retained austenite in carburized layers

Journal de Physique IV, 2004
In this paper, modelling of the phase composition of the carburized case produced on steel alloys containing chromium, manganese and nickel will be discussed. In particular, the effect of steel composition on the amount of retained austenite and carbide structure will be discussed.
M. Przyłęcka, W. Gęstwa, G. E. Totten
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Transformation of retained austenite in carburized 4320 steel

Metallurgical Transactions A, 1991
A systematic study of stress-induced and thermal-induced transformation of retained austenite in carburized 4320 steel with an initial retained austenite of 35 pct has been conducted. The transformation was monitored by recording the change in volume of smooth fatigue specimens.
R. W. Neu, Huseyin Sehitoglu
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Retained carbide distribution in intercritically austenitized 52100 steel

Metallurgical Transactions A, 1986
Two 52100 steels, one containing 0.009 pct P, the other 0.023 pct P, were homogenized at 1150 °C, slowly cooled to form proeutectoid carbides and pearlite, partially spheroidized, austenitized at 850 °C for one hour, oil quenched, and tempered at 200 °C.
E. L. Brown, G. Krauss
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Measurement of retained austenite using scanning electron metallography

Micron (1969), 1971
Abstract The volume percentage and distribution of retained austenite in two steels has been studied by scanning electron microscopy. Metallographically polished and etched samples were examined in the as-etched and replica-cleaned conditions. SEM results provide more information compared to other microscopic techniques because they take into account
O. Johari, A.V. Samudra
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Lattice parameter measurement in retained austenite by CBED

Proceedings, annual meeting, Electron Microscopy Society of America, 1983
The thin film (50-400 Å) retained austenite (ret-γ) (fig.1.a-b) has been identified at the lath boundaries of dislocated martensitic medium carbon (C) low alloy experimental steels, which were designed for structural applications. The existance of this parent γ-phase at the ambient temperatures has been attributed to several stabilization mechanisms in
Mehmet Sarikaya, John W. Steeds, Gareth Thomas   +2 more
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