Question

17. Pl astically deforming a metal specimen near room temperature generally leads to which of the following property changes? a. A decreased yielding strength and an increased ductility b. An increased yielding strength and an increased ductility c. A decreased yielding strength and a decreased ductility d. An increased yielding strength and a decreased ductility 18. A dislocation formed by adding an extra half-plane of atoms to a crystal is referred to as a (an) a. screw dislocation b. vacancy c. interstitial d. edge 19. The atoms surrounding an edge dislocation experience which kinds of strains? a. tensile b. shear c. compressive d. both b and c 20. For a cubic single crystal material, the independent number of elastic constants is a. 1 b. 2 C. d. 5

number 17,18,19,20

material science

Answer 1

plaskally al secinen re Since, plasbally deteomiametal disto Cation darsity 8) A dis keation boomed by adding an extr a to asand dis ation Ans opbon d Susvoundirg an edge discati on fos a fhlapendent numbes elastic Constants is 3