Results 161 to 170 of about 569 (211)
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Ductile–brittle transition temperature of polylactic acid-based biocomposite
Journal of Thermoplastic Composite Materials, 2011Almost all materials exhibit sensitivity of mechanical properties to temperature. Polylactic acid (PLA), an amorphous polymeric material, also exhibits this type of behavior. Because of its limited application in structural purpose, very few journals and articles study the ductile–brittle transition temperature (DBTT) of polymeric materials, especially
MR Kaiser, H Anuar, SBA Razak
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The Scientific Temper, 2022
The effect of different mineral fillers (Talc, calcium carbonate, clay, mica) on the tougheningbehavior and ductile-brittle transition temperature (DBTT) of TPOs composites has beeninvestigated in the paper. An attempt was made to investigate impact strength to determine theDBTT of the mineral-modified TPO composite system by employing a series of ...
Amresh Kumar Singh +2 more
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The effect of different mineral fillers (Talc, calcium carbonate, clay, mica) on the tougheningbehavior and ductile-brittle transition temperature (DBTT) of TPOs composites has beeninvestigated in the paper. An attempt was made to investigate impact strength to determine theDBTT of the mineral-modified TPO composite system by employing a series of ...
Amresh Kumar Singh +2 more
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Acta Metallurgica, 1970
Abstract The change in the ductile-brittle transition temperature of polycrystalline chromium produced by subjecting specimens to a hydrostatic pressure, P, in the range 5–31 kbars and then testing at atmospheric pressure was investigated. The transition temperature, Tt, for the as-recrystallized material was ∼550°K and only treatments above 6 kbars ...
H.G Mellor, A.S Wronski
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Abstract The change in the ductile-brittle transition temperature of polycrystalline chromium produced by subjecting specimens to a hydrostatic pressure, P, in the range 5–31 kbars and then testing at atmospheric pressure was investigated. The transition temperature, Tt, for the as-recrystallized material was ∼550°K and only treatments above 6 kbars ...
H.G Mellor, A.S Wronski
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Ductile–brittle transition in micropillar compression of GaAs at room temperature
Philosophical Magazine, 2011Experiments have been carried out on how compressive failure of axis GaAs micropillars at room temperature is influenced by their diameter. Slip was observed in all micropillars, often on intersecting slip planes. Cracks could nucleate at these intersections and then grow axially in the sample, with bursts of crack growth.
Fredrik Östlund +6 more
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Effect of purity on the ductile-brittle transition temperature of alloy G29
Metal Science and Heat Treatment, 19831. The exceedingly high cold resistance that is characteristic of alloy G29 of high purity is not observed for the alloy with 29% Mn with a higher concentration of nitrogen and carbon. 2. Because of the austenitizing effect of carbon and nitrogen, the boundary of the phase areas on the Fe-Mn diagram shifts to lower manganese ...
T. F. Volynova, V. M. Mnasin
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Journal of Applied Mechanics, 2015
A recently developed ductile/brittle theory of materials failure is evaluated. The failure theory applies to all homogeneous and isotropic materials. The determination of the ductile/brittle transition is an integral and essential part of the failure theory.
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A recently developed ductile/brittle theory of materials failure is evaluated. The failure theory applies to all homogeneous and isotropic materials. The determination of the ductile/brittle transition is an integral and essential part of the failure theory.
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Doklady Physical Chemistry, 2008
The author deduces required dependence on the ground of consideration of thermodynamic potential at ductile-brittle transition under stresses, having assumed power dependence of coefficients on temperature. Calculated results are compared with the Moessbauer spectra observations.
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The author deduces required dependence on the ground of consideration of thermodynamic potential at ductile-brittle transition under stresses, having assumed power dependence of coefficients on temperature. Calculated results are compared with the Moessbauer spectra observations.
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Constraint Effect on Fracture in Ductile-Brittle Transition Temperature Region (Report 3)
Volume 1: Codes & Standards, 2023Abstract In order to predict fracture behavior in the ductile-brittle transition temperature (DBTT) region of a structure with low constraint, a plastic constraint correction coefficient χ was proposed. It was defined as a ratio of KJ of a fracture toughness specimen to KJ of a reactor pressure vessel with a specific flaw shape with the ...
Kiminobu Hojo +6 more
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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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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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