Results 111 to 120 of about 297 (137)
Effect of boron on bainitic transformation kinetics after ausforming in low carbon steels
Journal of Materials Science and Technology, 2017 The addition of boron (B) is frequently adopted to increase the hardenability of bainitic steels. Although it is well known that B can retard the bainitic transformation kinetics, it is still not clear how the B affects the bainitic transformation ...
Wei Xu, M X Huang
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Effect of ausforming temperature on bainite morphology in a 3.2% Si carbide-free bainitic steel
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2023 The effect of ausforming temperatures on bainite morphology was investigated on a newly developed carbide-free high-silicon steel. High plastic deformation (30%) was applied to undercooled austenite after austenitization in the temperature range 900–300 °
Mattia Franceschi +2 more
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Ausforming of medium carbon steel
Materials Science and Technology, 2015The prospect of enhancing the hardness of low alloy steel for the manufacture of fasteners is examined using ausforming, in which the austenite is deformed rapidly at a low temperature to increase its dislocation density before quenching in order to obtain the harder martensite.
H K D H Bhadeshia, Dong-Woo Suh
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Impact toughness of an S700MC-type steel: Tempforming vs ausforming [PDF]
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2018 The effect of different thermomechanical treatments, i.e., ausforming and tempforming, on the microstructure and mechanical properties including impact fracture behavior of high-strength low-carbon S700MC-type steel was ...
Z Yanushkevich, Rustam Kaibyshev
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Influence of flow stress of ausformed austenite on strength of ausformed martensite
Materials Chemistry and Physics, 1986Abstract The relationship between the flow stress of austenite at ausforming temperature and the hardness of the ausformed martensite (or austenite) at room temperature was studied using martensitic steel 18CrNiW and austenitic steel 18-8. Ausforming was performed with a torsion test machine at various temperatures between 723K and 923K and at strain
C.K. Yao, Z. Xu
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Effect of ausforming on nanobainite steel
Scripta Materialia, 2010The effect of ausforming on kinetics, morphology and crystallography of nanobainite steel was examined by electron backscattered diffraction and transmission electron microscopy. Ausforming has been found to accelerate bainite transformation at 573 K. A characteristic microstructure consisting of blocky bainitic laths and retained austenite is observed
W. Gong, Y. Tomota, M.S. Koo, Y. Adachi
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The fracture of ausformed steels
Journal of Materials Science, 1969The influence of ausforming on the methods of tensile and impact fracture in a low alloy steel, has been studied.
A. R. Cox, P. Jones
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Nature, 1965
THE grain size of the ultra-strong, ausformed steels is probably an important factor in their strength and ductility, but it is yet uncertain. The structures are so fine and complex that even the electron microscope has not hitherto revealed the grain structure clearly.
K. F. HALE, D. MCLEAN
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THE grain size of the ultra-strong, ausformed steels is probably an important factor in their strength and ductility, but it is yet uncertain. The structures are so fine and complex that even the electron microscope has not hitherto revealed the grain structure clearly.
K. F. HALE, D. MCLEAN
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Journal of Materials Science, 1999
Lattice defects are introduced into stable austenite (β) by hot rolling up to 70% (in one pass) in a temperature range between 900 > TAF > 340 °C (ausforming (AF)). The changes in microstructure, thermal transformation behavior, as well as normal and anomalous properties in stress-, strain-, and temperature-space were studied.
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Lattice defects are introduced into stable austenite (β) by hot rolling up to 70% (in one pass) in a temperature range between 900 > TAF > 340 °C (ausforming (AF)). The changes in microstructure, thermal transformation behavior, as well as normal and anomalous properties in stress-, strain-, and temperature-space were studied.
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Variant selection of lenticular martensite by ausforming
Scripta Materialia, 2012The variant selection of lenticular martensite transformed from austenite in an Fe–25Ni–0.5C alloy uniaxially compressed at 973 K was investigated quantitatively. It was found that four variants with habit planes closely parallel to the compression plane were favorably formed.
T. Chiba, G. Miyamoto, T. Furuhara
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