Question

C.E Materials

please show all work and clearly circle answer(s). Thank you

5. Is the following statement true or false? "Tensile strength of steel increases when carbon content increases." (2 points) 6. Is the following statement true or false? "In a tension test on steel, the true stress is higher than the engineering stress at fracture." (2 points) 7. Is the following statement true or false? "In a tension test on steel, the true strain is higher than the engineering strain at fracture." (2 points) 8. Is the following statement true or false? "In a Charpy V Notch (CVN) impact test on a steel specimen, the reading is higher when temperature is higher." (2 points) 9. Is the following statement true or false? “Strength of aluminum is considerably affected by temperature." (2 points)

Answer 1

mer case of Carbon Content Creates fncrease tensile Shreng th and hardneas Casbon decrease in Content Toue Toue applied Load deformed area Tou Stress applicd Loap Eryfineriny Shress Inshat area clue to tenstorn test, the lengh nereases and decreses arca creates larger shers engincedrny to decrease area Toue Stress Compared wit Toue Strain dn +e) shrain ehee ee eyint eniy Tarue shrain n Cite) e3 - tel .e- Engnieesing strain False

Impact Enegy Temperature Toue as temperatee increses af Tmpach energy odl ncreate . As temp fnerentes thSheny fh aluminen decreeess aproackiny melt point theh e alurminum decre ses half yteld Stres s aluminun Temp