{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Problem Set 3

Problem Set 3 - ° C 5 Some hypothetical alloy has an...

This preview shows page 1. Sign up to view the full content.

MECH 210 – Materials Science and Engineering Problem Set 03, Fall Semester 2008 Due Friday (9/26) 1. A specimen 1015 mm long of a low carbon-nickel alloy (Figure 8.31) is to be exposed to a tensile stress of 70 MPa at 427 ° C. Determine its elongation after 10,000 h. Assume that the total of instantaneous and primary creep elongation is 1.3 mm. 2. A cylindrical component constructed from a low carbon-nickel alloy (Figure 8.30) has a diameter of 19.1 mm. Determine the maximum load, in N, that may be applied for it to survive 10,000 h at 538 ° C. 3. From equation 8.19, if the logarithm of s ε & is plotted versus the logarithm of σ , then a straight line should result, the slope of which is the stress exponent n . using Figure 8.31, determine the value for the low carbon-nickel alloy at 427 ° . 4. For an 18-8 Mo stainless steel (Figure 8.35), predict the time to rupture for a component that is subjected to a stress of 100 MPa at 600
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ° C. 5. Some hypothetical alloy has an atomic weight of 184.4 g/mol, a density of 12.30 g/cm 3 , and an atomic radius of 0.146 nm. Determine whether its crystal structure is FCC, BCC, or simple cubic. Justify your determination. 6. Magnesium has an HCP crystal structure, a c/a ratio of 1.624, and a density of 1.74 g/cm 3 . Compute the atomic radius for Mg. Problems 7 and 8 Problem 9 Problem 10 7. The unit cell for a hypothetical metal is shown. (a) To which crystal system does this unit cell belong? (b) What would this crystal structure be called? (c) Calculate the density of the metal if its atomic weight is 141 g/mol. 8. What are the indices for the direction indicated by the vector in the unit cell? 9. (a) Determine the Miller indices for planes A and B shown. (b) What are the indices for the vectors representing the normals to the planes? (c) What is the angle between the two normals in part (b)?...
View Full Document

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern