The yield strength for an alloy that has an average grain diameter of 4.6x102 mm is 112 MPa. At a grain diameter of 8.6 × 10 mm, the yield strength increases to 271 MPa. At what grain diameter, in mm, will the yield strength be 228 MPa? d- mm

Two previously undeformed cylindrical specimens of an alloy are to be strain hardened by reducing their cross-sectional areas (while maintaining their circular cross sections). For one specimen, the initial and deformed radii are 15?? and 12??, respectively. The second specimen, with an initial radius of 11??, must have the same deformed hardness as the first specimen. Compute the second specimen’s radius after deformation.

A cylindrical specimen of undeformed brass that has a diameter of 300 mm is elastically deformed to a tensile strain of 0.001. If the Poisson's ratio for this brass is O.35, what is the change in specimen diameter? O Decrease by 3.00 x 104 m O Decrease by 1.05 x 104 m O Increase by 1.05 x 104 m O Increase by 0.028 mm

An aluminum alloy cylindrical bar of 10 mm diameter is subjected to 5 kN tensile load which reduces the diameter of bar to 9.997 mm. If the Young's modulus of the bar is 6.95 x 104 MPa, calculate the Poisson's ratio of the alloy.

Consider an S-590 alloy component as shown in following figure that is subjected to a stress of 200 MPa (29,000 psi). At what temperature will the rupture lifetime be 509 h?

Question No.2 Figure P1.16 shows the stress-strain relations of metals A and B during ten- sion tests until fracture. Determine the following for the two metals (show all calculations and units): a. Proportional limit b. Yield stress at an offset strain of 0.002 m/m. c. Ultimate strength d. Modulus of resilience e. Toughness I. Which metal is more ductile? Why? 900 -Metal A E 600 Metal B 300 0.00 a02 004 a.06 0.08 0.10 0.12 014 Strain, matm FIGURE P1.16 Strees, MPa

An aluminum alloy rod with 10 mm diameter was subjected to a 5-kN tensile load. After the load was applied, the diameter was measured and found to be 9.997 mm.If the yield strength is 139 MPa, calculate the Poisson’s ratio of the material.

An aluminum alloy rod with 10 mm diameter was subjected to a 5-kN tensile load. After the load was applied, the diameter was measured and found to be 9.997 mm. If the yield strength is 139 MPa, calculate the Poisson’s ratio of the material.

The strength of titanium is 448.16 MPa when the grain size is 17.02 μm and565.4 MPawhen the grain size is0.8μm. What average grain size (in nm) is required to achieve a strength of approximately 839 MPa?

If it is constrained between two supports A and B and is stress-free at 20 ℃, what would be the stress in the two materials when it is heated to 70 ℃, For Steel: Es = 210 GPa, Coefficient of expansion = 12x10^6/℃. For Brass: Eb = 105 GPa, Coefficient of expansion = 19x10^-6/℃