The yield strength for an alloy that has an average grain diameter of 5.2 × 10-2 mm is 110 MPa. At a grain diameter of 6.3 × 10³ mm, the yield strength increases to 251 MPa. At what grain diameter, in mm, will the yield strength be 222 MPa? d = mm

When a cold-worked metal is heat-treated below its melting point over a period of time, which of the following phenomena occur? (This question has more than one correct answer) a. Strength is increased b. Dislocation density decreases c. Grain size increases d. Internal lattice strains decrease e. Ductility is reduced

N MPa = 10 2.2. When the Hall-Petch coefficient is 20 GPa nm/2, estimate the grain size of this alloy after recrystallization. -1/2 d O=O₂+ Kuda куба го вра има че app MPa = 150 MPa + 20 × 10 °MPant -150MPa 1

5. Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is oriented such that a tensile stress is applied along a [102] direction. If slip occurs on a (111) plane and in a [101] direction, compute the stress at which the crystal yields if its critical resolved shear stress is 3.42 MPa.

Consider a dislocation condition as shown below. A) what is the strain state in the upper region and B) how would addition of small impurity atoms in the region indicated by "*"s change it? OOOOOO ooooooo OO OO O O O O O O O O O O O O Select one: a. Tensile, would increase tensile strain b. Shear, would increase compressive strain c. Tensile, would decrease tensile strain O d. Compressive, would reduce compressive strain e. Compressive, would increase compressive strain

Please type answer no write by hend.

What would be the compressive stress in MPa developed in the silica glass furnace tube constrained in the way illustrated in the figure if it were heated to 1000C?

Help me please

A metallic tube has an outer diameter of 500 mm and a wall thickness of 30 mm (Figure 4). The working internal pressure of the tube is 15 MPa and the fracture toughness of the material (K₁c) ranges from 40 MN/m³/2 to 50 MN/m³/2. Select a value for Kic and determine the size of the largest flaw the tube can contain. Assume that for this geometry K σφπα. = 30 mm! 500 mm Figure surface flaws 4 (not to scale)

Need help on this Q