Steady state rate data are given in the following Table for some alloy at 200°C, if its known that the activation energy for creep is 140×10° J/mol, compute the steady state creep rate at temperature of 250°C and stress level of 48MPA.

A 3105 aluminum plate is reduced from 4.38 cm to 2.88 cm. Determine the final properties of the plate. See attached figure

The yield strength for an alloy that has an average grain diameter of 5.9 x 10-2 mm is 148 MPa. At a grain diameter of 7.8 × 10-³ mm, the yield strength increases to 233 MPa. At what grain diameter, in mm, will the yield strength be 247 MPa? d = i mm

Consider the following data for a range of materials. In which of the following situations is creep likely to occur? Melting temperature of various materials: Melting Temperature (°C Material Ti alloy 1668 Carbon steel 1375 Alumina 2070 Nylon 66 polymer 262 A carbon steel component under continuous load in a power station operating at 200°C. A nylon pipe carrying fluid at 125K. All of the scenarios. A Ti alloy in a turbine operating at 350°C. An alumina ceramic component in a furnace operating at 600°C.