Answer Happy

Choose all correct statements from the selections below Select one or more: O a. Crack grows 45° to the loading direction in brittle materials O b. Steel becomes more ductile below its ductile-to-brittle transition temperature O c. Aluminium is more brittle than brass O d. Plastic deformation takes place prior to brittle fracture HCP materials are more brittle than BCC materials O e. O f. Ductile materias can induce larger strain energy than brittle materials Use of engineering stress instead of true stress would underestimate materials' strength Og Oh. Brittle materials have greater toughness than ductile materials Oi. Additional carbon impurities in steel decrease its ductile-to-brittle transition temperature