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Showing 1 to 4 of 4 for “"in situ straining"”.
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Deformation mechanisms in B2 aluminides: shear faults and dislocation core structures in FeAl, NiAl, CoAl and FeNiAl
Although aluminides with the B2 crystal structures have good properties for high temperature applications, the strong ordered bonds that make them durable at high temperature also make them too brittle at room temperature for industrial fabrication. In order to better understand this lack of …
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The effects of hydrogen on the deformation and fracture behavior of the metastable beta-titanium alloy, TIMETAL(RTM) 21S
… transition when the hydrogen concentration is increased slightly above H/M $=$ 0.22. To understand this sharp transition, a series of experiments was devised to test for the possible hydrogen embrittlement mechanisms. In situ straining experiments in an environmental cell TEM showed that …
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Hydrogen Effects on Crystal Dislocations and Stacking-Fault Energy
The mechanisms of hydrogen shielding the interaction of dislocations with other elastic centers are outlined. In-situ straining transmission electron microscope experiments show that the effect of hydrogen on the interaction between dislocations is reversible, whereas in systems where significant …
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Time-resolved and three-dimensional study of dislocation-particle interactions in aluminum and copper alloys
Dislocation-particle interactions in three alloys systems, Al-Cu, Al-Mg-Sc, and Cu-Co have been investigated using in situ straining experiments inside the transmission electron microscope, post mortem analysis, and electron tomographic reconstructions. Specifically, diffraction-contrast electron …