Results 151 to 160 of about 1,353 (194)
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Effect of prior austenite grain size on isothermal bainite transformation in 65Cr steel
Materials Letters, 2020Abstract Isothermal bainite transformation was conducted on both ultrafine-grained (UFG) and normal-grained (NG) 65Cr steels. Both bainite morphology and transformation rate are greatly influenced by prior austenite grain size. Bainite transformation rate is greatly retarded in the UFG steel with average grain size of 4.6 μm.
Junjie Sun +3 more
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Metallurgical and Materials Transactions A, 2005
The effect of prior-austenite grain size and transformation temperature on nodule size and colony size of hypereutectoid steels containing 1 pct carbon with different levels of vanadium and silicon was investigated. Specimens of the various steels were thermally processed at various temperatures ranging from 900 °C to 1200 °C and transferred to salt ...
Elwazri, A., Wanjara, P., Yue, S.
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The effect of prior-austenite grain size and transformation temperature on nodule size and colony size of hypereutectoid steels containing 1 pct carbon with different levels of vanadium and silicon was investigated. Specimens of the various steels were thermally processed at various temperatures ranging from 900 °C to 1200 °C and transferred to salt ...
Elwazri, A., Wanjara, P., Yue, S.
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Effect of Prior Austenite Grain Size on Impact Toughness of Press Hardened Steel
SAE International Journal of Materials and Manufacturing, 2016<div class="section abstract"><div class="htmlview paragraph">Impact toughness (or resistance to fracture) is a key material property for press hardened steel used in construction of the safety-critical elements of automotive body structures.
Jeff Wang +3 more
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Effect of Prior Austenite Grain Size on the Morphology of Nano-Bainitic Steels
Metallurgical and Materials Transactions A, 2018The strength in nanostructured bainitic steels primarily arises from the fine platelets of bainitic ferrite embedded in carbon-enriched austenite. However, the toughness is dictated by the shape and volume fraction of the retained austenite. Therefore, the exact determination of processing–morphology relationships is necessary to design stronger and ...
SINGH, K, KUMAR, A, SINGH, A
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Austenite Reconstruction Elucidates Prior Grain Size Dependence of Toughness in a Low Alloy Steel
Metallurgical and Materials Transactions A, 2018Texture and grain size distribution of the austenite phase at high temperature have distinct effects on the subsequent transformed microstructure and mechanical properties of steel alloys at room temperature. Measurement of austenite at high temperature is not, however, a trivial task especially if orientation maps are desired.
Ranger, Chasen +5 more
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Hydrogen-induced delayed fracture of a martensitic steel with fine prior-austenite grain size
Journal de Physique IV (Proceedings), 2003The influence of the grain size of the prior-austenite on the hydrogen-induced delayed fracture property was investigated for a medium carbon tempered martensitic steel (JIS-SCM440) with a tensile strength of 1400MPa. Thermomechanical treatment, which consists of a warm working at 873K by multi-pass bar rolling of tempered martensite and subsequent ...
Y. Kimura +4 more
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Effect of Prior Austenite Grain Size on Hydrogen Embrittlement Behaviors In 8Ni-0.1C Steel
2013The present study investigated the effect of prior austenite grain size on hydrogen embrittlement in an 8Ni-0.1C martensitic steel. The prior austenite grain size was refined from 124 μm to 4.7 μm through cyclic heat treatment of austenitizing and water quenching.
Akinobu Shibata +2 more
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Effects of the prior austenite grain size on the ductility of fully pearlitic eutectoid steel
Metallurgical Transactions A, 1986The role of large prior austenite grain sizes in promoting low ductility of fully pearlitic eutectoid steels has been investigated. Independent variation of the pearlite interlamellar spacing,S p, and the prior austenite grain size enabled determination of the microstructural feature controlling ductility in these steels.
John J. Lewandowski, Anthony W. Thompson
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The effect of austenitising temperature on prior austenite grain size in a low-alloy steel
Materials Science and Engineering: A, 2008Abstract The effect of varying normalising and hardening temperatures on the prior austenite grain size in a low-alloy Cr–Mo–Ni–V steel has been examined. An initial relative insensitivity of grain size to increasing austenitising temperature was observed followed by a sudden growth of grains at approximately 1000 °C.
S. Maropoulos, S. Karagiannis, N. Ridley
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Determination of the prior austenitic grain size of selected steels using a molten glass etch
Journal of Heat Treating, 1991A hot etching procedure used to reveal the prior austenitic grain size of several steels was evaluated. Etching experiments, using molten glass, were conducted on a HSLA precipitation hardened steel, two alloy steels, and a control rolled steel. For comparison purposes, the austenite grain size of the HSLA precipitation hardenable steel was determined ...
G. E. Hicho +3 more
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