Problem 4 The yield point of a steel that has an average grain diameter of 21.3...
Question 3 10 pts The lower yield point for an iron that has an average grain diameter of 40um is 100 MPa. At a grain diameter of 6.4μm, the yield point increases to 160MPa At what grain diameter (in um)will the lower yield point be 128.8 MPa? (round to two decimal places)
The yield strength for an alloy that has an average grain diameter of 5.7 × 10-2 mm is 140 MPa. At a grain diameter of 7.3 × 10-3 mm, the yield strength increases to 277 MPa. At what grain diameter, in mm, will the yield strength be 228 MPa? d = mm We were unable to transcribe this imageThe yield strength for an alloy that has an average grain diameter of 5.7 x 10-2 mm is 140 MPa. At a...
S. (2 Marks) An alloy with an average grain diameter of 35 um has a yield strength of 163 Mpa. and when it undergoes strain hardening, the grain diameter reduces to 17 um with an increase in yield strength to 192 MPa. If the coarseness of the alloy desired for a particular application cannot exceed 12 um, what will be the expected yield strength?
The yield strength for an alloy that was an average grain diameter of 5.4 x 102 mm is 133 MPa. At a grain diameter of 7.4 x 10 mm, the yield strength increases to 250 MPa. At wh grain diameter, in mm, will the yield strength be 203 MPa? mm the tolerance is +/-6% Click if you would like to Show Work for this question: Open Show Work
The yield strength ơy of low-carbon steel is moderately dependent on the grain size D, and the relation can be described by the equation: where σ, and k are material constants. The yield strength is 322 MPa for a grain size of 180 um and 363 MPa for a grain size of 22 um. (a) Calculate the yield strength of the steel for a grain size of 11 um. (b) Explain briefly the physical significance of the constant ơ0.
An uncold-worked brass specimen of average grain size 0.008 mm has a yield strength of 163 MPa. Estimate the yield strength of this alloy (in MPa) after it has been heated to 600°C for 1500 s, if it is known that the value of ky is 12.7 MPa-mm 1/2. The Animated Figure 7.25 may be helpful. MPa [The tolerance is +/- 10%.]
An uncold-worked brass specimen of average grain size 0.008 mm has a yield strength of 151 MPa. Estimate the yield strength of this alloy (in MPa) after it has been heated to 600°C for 1220 s, if it is known that the value of ky is 11.5 MPa-mm 1/2. The Animated Figure 7.25 may be helpful. MPa (The tolerance is +/- 10%.) Click if you would like to Show Work for this question: Open Show Work
The part shown in the figure has a circular cross-section of 0.04 m diameter. It is made of a steel with a yield strength of 343 MPa and an ultimate strength of 410 MPa, and is subjected to a force, F, of 2500 N. 1. Locate the most critical point. (2 points) 2. Plot the three-dimensional stress element for that point. (2 points) 3. Calculate the values of stresses. (6 points) Fぐ Fぐ
A closed cylindrical pressure vessel has an internal diameter of 1.0m and made of steel of thickness 0.01m. Principal stresses at a point A closed cvlindrical pressure vessel has an internal diameter of 1.0 m and is made of steel plate of thickness 0.010m. The internal pressure is 5 MPa. The vield strength of the steel under uniaxial tension is 200 MPa. Determine the principal stresses at a point on the internal surface of the vessel. Will the wall of...
Problem 6: Link 2, shown in the figure, is 25 mm wide, has 12-mm diameter bearings at the ends, and is cut from low-carbon steel bar stock having a minimum yield strength of 165 MPa. The end- condition constants are C-1 and C-1.2 for buckling in and out of the plane of the drawing, respectively. a. Using a design factor na 4, find a suitable thickness for the link. b. Are the bearing stresses at O and B of any...