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Constraint Effect on Fracture in Ductile-Brittle Transition Temperature Region (Report 2)
Volume 1: Codes and Standards, 2022Abstract In order to predict fracture behavior of a structure with low constraint, tensile fracture tests using flat plate specimens with a surface flaw were performed at −80°C and −120°C in the ductile-brittle transition temperature (DBTT) region. The shape of the flat plate was 50mm thickness, 200mm width, and 500mm length.
Kiminobu Hojo +6 more
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Determination of the ductile-brittle transition temperature from the microplastic-strain rate
Russian Metallurgy (Metally), 2008The possibility of the determination of the tendency of cast and deformed steels to brittle fracture using the temperature dependence of the small-plastic-strain rate is studied. The temperature corresponding to the maximum in this curve is found to indicate an abrupt decrease in the steel plasticity, which makes it possible to interpret it as the ...
A. K. Andreev, Yu. P. Solntsev
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Polypropylene-elastomer (TPO) nanocomposites: 3. Ductile-brittle transition temperature
Polymer, 2012Abstract Izod impact strength was determined as a function of temperature for polypropylene (PP)/ethylene-co-octene elastomer (EOR) blends and nanocomposites to determine the effect of PP molecular weight, elastomer MFI, EOR octene content and MMT content on the ductile-brittle (D-B) transition temperature.
Rajkiran R. Tiwari, D.R. Paul
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Materials Science and Engineering: A, 2014
Abstract A modified 9Cr–1Mo steel has been exposed to three separate normalization treatments i.e. at 950 °C, 1025 °C and 1100 °C from As-received (normalized at 1050 °C and tempered at 750 °C) condition. After subsequent tempering treatment the impact toughness in terms of upper shelf energy (USE) and ductile-to-brittle transition temperature (DBTT)
Arya Chatterjee +4 more
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Abstract A modified 9Cr–1Mo steel has been exposed to three separate normalization treatments i.e. at 950 °C, 1025 °C and 1100 °C from As-received (normalized at 1050 °C and tempered at 750 °C) condition. After subsequent tempering treatment the impact toughness in terms of upper shelf energy (USE) and ductile-to-brittle transition temperature (DBTT)
Arya Chatterjee +4 more
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The Effect of Fatigue on the Ductile-Brittle Transition Temperature of Two Mild Steels
Canadian Metallurgical Quarterly, 1966AbstractTwo notched, mild steels in artificial sea water at 24°C were fatigued in tension-compression for approximately 1 and 15 per cent of the fatigue life. The ductile-brittle transition temperature (dbtt) was evaluated by notchtensile tests and Standard Oil Development (SOD) tests. Fatiguing raised the dbtt by about 15 to 20°C.
D.M. Fegredo, R.C.A. Thurston
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Study on Ductile Brittle Transition Temperature of Q345C Steel MAG Welded Joints
Key Engineering Materials, 2016For Q345C steel MAG welded joints, low temperature tensile test was carried out at normal atmospheric temperature, 0°C,-20°C,-30°C and-40°C in the paper, which results in the law of strength change with temperature. The impact absorption energy of the weld seam sample under different temperature conditions was tested, impact fracture morphology was ...
Yong Shou Wu, Yong Jun Liu
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Fatigue & Fracture of Engineering Materials & Structures, 2014
ABSTRACTThe ductile–brittle transition temperature is not intrinsic to steel but depends on the specimen type and loading mode used for the test. The influence of these parameters is related to the plastic constraint. Here, the constraint is evaluated by the effective T‐stress obtained by the stress difference method on the notch tip stress ...
J. Capelle +3 more
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ABSTRACTThe ductile–brittle transition temperature is not intrinsic to steel but depends on the specimen type and loading mode used for the test. The influence of these parameters is related to the plastic constraint. Here, the constraint is evaluated by the effective T‐stress obtained by the stress difference method on the notch tip stress ...
J. Capelle +3 more
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Strength, ductility, and ductile-brittle transition temperature for MFR candidate vanadium alloys
Journal of Nuclear Materials, 1988Abstract The dependence of the yield strength, tensile strength, elongation, and reduction in area on temperature for the V15Ti7.5Cr, V20Ti, V15Cr5Ti, V12Cr5Ti, V10Cr5Ti, and V3Ti1Si al temperatures ranging from 25 to 700°C. The strength of the alloys increased with an increase of the combined Cr and Ti concentration.
B.A. Loomis +3 more
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Reduction of the ductile brittle transition temperature of ferritic-martensitic alloy HT-9
Journal of Nuclear Materials, 1984Abstract The effects of austenitization and tempering treatments on the impact properties of a 12 Cr-1 Mo-V-W steel are reported. Austenitizing temperatures covering the range 1000 to 1200°C and tempering treatments of 650 to 850°C were used. The greatest decrease in the ductile brittle transition temperature was found with a combination of “high-low”
Roy C. Wilcox, Bryan A. Chin
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Correlation of temperature and grain size effects in the ductile-brittle transition of molybdenum
Philosophical Magazine, 1965Abstract An experimental investigation of the effects of temperature and grain size on the tensile properties of high purity molybdenum showed that transitions from ductile to brittle behaviour occur with both decreasing temperature and increasing grain size.
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