nwed help with this questions? ate planar defects, which restrict the movemend l

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nwed help with this questions?

ate planar defects, which restrict the movemend line deletts. a Interstitials Vacancies d Grain boundaries e. None of the above 15, We need the tensile strength tor an aluminum alloy (non -ferrous) with a Brineli hardness number is 210 What is its approximate tensile strength? 16 Non crystalline or amorphous materials demonstrate a glass transition lemperature (Tal. below which these materials are brittle and glass-like b, False 17 Titanium is allotropic and exists as either as BCC or HCP crystal structures? Which one would be more susceptible to a ductile brittie transition? b HCP c None of the above

Explanation / Answer

Ans. 14. d

Grain boundaries are the planar defects which restrict the movement of line defects

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