Is it possible to temper an oil-quenched 4140 steel cylindrical Is it possible to temper an oil-quenched 4140 steel cylindrical shaft 100 mm (4 in.) in diameter so as to give a minimum tensile strength of 850 MPa (125,000 psi) and a minimum ductility of 21%EL? If so, specify a tempering temperature. If this is […]
Is it possible to produce malleable cast iron in pieces Is it possible to produce malleable cast iron in pieces having large cross-sectional dimensions? Why or why not?
Is it possible to produce an oil-quenched and tempered 4340 Is it possible to produce an oil-quenched and tempered 4340 steel that has a minimum yield strength of 1400MPa (203,000psi) and a ductility of at least 42%RA? If this is possible, describe the tempering heat treatment. If it is not possible, explain why.
Is it possible to produce an iron-carbon alloy that has Is it possible to produce an iron-carbon alloy that has a minimum tensile strength of 690MPa (100,000psi) and a minimum ductility of 40%RA? If so, what will be its composition and microstructure (coarse and fine pearlites and spheroidite are alternatives)? If this is not possible, […]
Is it possible to have an iron-carbon alloy for which the mass Is it possible to have an iron-carbon alloy for which the mass fractions of total ferrite and proeutectoid cementite are 0.846 and 0.049, respectively? Why or why not?
society. law, and Government The U.S. Court System is a complex system that includes both federal and state-level courts. The federal system includes the judicial branch of the government. This system is designed to help society interpret the U.S. Constitution and provide guidelines for society. Court cases may concern many different topics and have an […]
Is it possible to produce a precipitation-hardened 2014 aluminum Is it possible to produce a precipitation-hardened 2014 aluminum alloy having a minimum tensile strength of 425 MPa (61,625psi) and a ductility of at least 12%EL? If so, specify the precipitation heat treatment. If it is not possible, explain why.
Is it possible to produce a continuous and oriented aramid Is it possible to produce a continuous and oriented aramid fiber-epoxy matrix composite having longitudinal and transverse moduli of elasticity of 57.1GPa (8.28 ( 106psi) and 4.12GPa (6 ( 105psi), respectively? Why or why not? Assume that the modulus of elasticity of the epoxy is […]
Briefly explain how each of the following influences Briefly explain how each of the following influences the tensile modulus of a semicrystalline polymer and why: (a) Molecular weight (b) Degree of crystallinity (c) Deformation by drawing (d) Annealing of an undeformed material (f) Annealing of a drawn material
Below is shown a plot of the logarithm (to the Below is shown a plot of the logarithm (to the base 10) of the diffusion coefficient versus reciprocal of the absolute temperature, for the diffusion of iron in chromium. Determine values for the activation energy andpreexponential.