QUESTION 4 What are some disadvantages to cold-working? Increased ductility Increased Brittleness ⓔ Increased Yield point...
The figure shown below shows the effect of cold-working on the mechanical properties of brass (70% copper and 30% zinc). A brass wire is to be cold-worked by drawing from 15mm to 11mm (You did this calculation in question 1 already). What are the tensile strength, yield strength and ductility (in % elongation) of this wire after being cold-drawn? (6 points) 2 800 0 700 600 60 S 500 40 O 400 30 300 20 5 200 10 100 10...
4. (10pts) A cylindrical specimen of cold-worked copper has a ductility (%EL) of 15%. If its cold-worked radius is 6.4 mm, what was its radius before deformation? (The graphs on the last page might be useful)
Question 4: A cylindrical specimen of cold-worked copper has a ductility (%EL) of 25% What is its tensile strength? (a) (b) If its cold-worked radius is 10 mm, what was its radius before deformation? 70 140 120 900 800 1040 Steel 60 120 1040 Stee 800 700 100 50 700 600 100 80 40 600 500 Brass Brass 80 30 60 400 500 Brass 20 Copper 40 300 60 400 Copper 10 1040 Stee 200 300 40 20 Copper 100...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL) of 30%. (a) If its cold worked radius is 6.4 mm, what was its radius before deformation? (b)What are its tensile and yield strengths? 140 120 800 900 1040 Steel 1040 S 700 800 100 120 600 a700 80 100 E 500 600 400 Br Brass 500 300 Capper 40 400 200 Capper 300 20 100 200 10 20 30 40 50 70 10...
Please answer all questions, thank you. Re-crystallization restores softness and ductility and decreases tensile strength. Question 7 Not yet answered Points out of 1.00 Select one: O True o False P Flag question Question 8 Hardness and strength in steel originate from the presence of Perlite (which contain iron and iron carbide) grains while ductility originates from ferrite grains. Not yet answered Points out of 1.00 Select one: O True O False Flag question Question 9 Not yet answered A...
Problem 2 (20 pts): Determine the range of acceptable initial thicknesses for a cold rolled plate with a final thickness of 0.5 cm having at least 65,000 psi tensile strength, 60,000 psi yield strength, and 5% elongation. [Hint: Assume a constant or infinite width.] 1 100 90 80 -70 60 100,000 90,000 a) Illustrate how you use the chart for this problem (4 pts) 70,0001-ensile strength 60,000 50,000 40,00아 Yield strength50 -40 30 20 10 30,000 20,000 10,000 % Elongation...
Question 7 10 pts Which of the following will reverse the effects of cold working? O reducing the grain size adding impurities through solid state diffusion annealing the material at an elevated temperature rolling to induce anisotropy Question 8 10 pts Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1° and 47.9°, respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa,...
Question 3 (1 point) One of the disadvantages of a proprietorship is that there is unlimited liability for the owner True False Question 4 (1 point) A withdrawal of cash for personal use by an owner would: O decrease total assets and decrease owner's equity decrease total assets and increase owner's equity u increase total assets and decrease owner's equity increase owner's equity and increase liabilities
Question 4 (1 point) A company has $500,000 in sales and the Accounts Receivable balance increased from $15,000 in 2018 to $25,000 in 2019. What is the total cash receipts from customers? $475,000 O $510,000 O $490,000 $525,000
040 Stee 0 0 400 600 0 0 200 400 600 Percent cold Percent cold 4. (20 points) Suppose that you work for a company that manufactures 1040 steel wire. A customer asks for 1 mm diameter 1040 steel wire with a yield strength of at least 700 MPa and a ductility of at least 12% elongation. Your warehouse is out of this material, but has a large amount of 1.5 mm diameter fully annealed 1040 steel wire, and you...