Electron-Fractographic Study of the Fractures in Zirconium Carbide after Tensile Testing in the Range 20–2000°C
A systematic study has been made of the fractures in ZrC specimens tested in tension in the range 20–2000°C, using optical magnification and the electron microscope. It was found that failure at all temperatures was of the macrobrittle type. It was concluded from the tests that the development of microplastic processes, which adsorb considerable energy during fracture, begins long before the region of the brittle-ductile transition (2000–2200°C) is reached.
KeywordsTensile Test Carbon Steel Shear Failure Atomic Mechanism Ordinary Method
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