Results 241 to 250 of about 49,081 (299)

Ductile-to-brittle transition strain rate

2006 8th Electronics Packaging Technology Conference, 2006
Solder joint failure mode depends on factors such as loading mode (shear vs. tensile), temperature, and strain rate. For any given loading mode and temperature, there is a transition from ductile failure to brittle failure as strain rate is increased. This ductile-to-brittle transition strain rate (DTBTSR) is one of the best indicators for robustness ...
Robert Darveaux, Corey Reichman
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Ductile-to-Brittle Transition in MoSi2

MRS Proceedings, 1992
We have studied the mechanical behavior of two fine grained MoSi2 alloys containing 0.61 at% (0.19 wt%) and 0.29 at% (0.09 wt%) oxygen, respectively. By preparing these alloys in almost identical fashion, their only difference was their oxygen content. The mechanical behavior was studied by four-point flexure tests in unnotched specimens between 800°C ...
S. R. Srinivasan, R. B. Schwarz, J. D. Embury   +2 more
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A ductile-to-brittle transition in bone?

Journal of Materials Science, 1974
Consideration is given to the possibility that compact bovine femur material undergoes a ductile-to-brittle transition behaviour which is similar in some respects to that which occurs for certain metallic materials. Evidence for this possibility is derived from compressive and tensile bulk strength measurements reported over a range of temperatures and
D. F. Hasson, R. W. Armstrong
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Polymer crystallinity and the ductile to brittle transition

Polymer, 2018
Abstract The effects of crystallinity and molecular weight on the ductile-brittle transition of a semi-crystalline polyamide were de-coupled. Low molecular weight organic acid solutions were used to accelerate the molecular weight degradation of polyamide-11 to be faster than with water aging at 120 °C.
Samuel J.A. Hocker, William T. Kim, Hannes C. Schniepp, David E. Kranbuehl   +3 more
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Ductile-to-brittle transition in cenosphere-filled polypropylene composites

Journal of Materials Science, 2010
Cenosphere-filled polypropylene (PP) composites were fabricated and characterized for their structural/morphological and fracture mechanical behaviour. The fracture properties were studied following the essential work of fracture (EWF) approach based on post-yield fracture mechanics (PYFM) concept.
Bhabani K. Satapathy, Arijit Das, Amar Patnaik   +2 more
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Orientation-dependent ductile-to-brittle transitions in nanostructured materials

Acta Materialia, 2008
Strengths of materials close to the upper theoretical limit have been observed in a number of recent experimental studies. The dimensions of the samples have been on the micron length scale and the strength is conferred by the absence of flaws. Below a critical length scale crystalline materials can sustain stresses near the theoretical strength ...
Ralph D. Nyilas, Ralph Spolenak
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Ductile-to-brittle Transition in Superplastic Silicon Nitride Ceramics

Journal of Materials Research, 2002
The ductile-to-brittle transition was observed in a superplastic silicon nitride nanoceramic. This transition depends on strain rates and deformation temperatures. Generally, the material exhibits ductility at low strain rates and high deformation temperatures. At 1600 °C, the material is brittle when the strain rates are higher than 10−3/s. At a fixed
Guo-Dong Zhan, Mamoru Mitomo, Rong-Jun Xie, Keiji Kurashima   +3 more
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Ductile to brittle transition of Cu46Zr47Al7 metallic glass composites

Materials Science and Engineering: A, 2008
Abstract The ductile to brittle transition behaviors of Cu 46 Zr 47 Al 7 metallic glass and its composite with different microstructures were systematically evaluated by Vickers hardness and small punch test, on the base of the uniaxial compression properties reported before. It was found that the metallic glass composite containing different volume
J.T. Fan, Z.F. Zhang, F. Jiang, J. Sun, S.X. Mao   +4 more
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Size-Scale Transition from Ductile to Brittle Failure

2021
With the scientific advances of the last few decades in the field of Material Mechanics it has been realized that the traditional concept of strength, understood as force per unit surface causing fracture, is in need of revision, especially in the cases where particularly large or particularly small structures are involved. The strength of the material
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