- Answer The Following 1 (85.41 KiB) Viewed 9 times
Answer the following:
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answerhappygod
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Answer the following:
Answer the following:
Metallography, crystallography, dislocation theory, and so forth. * 5 puntos The principle action of an etchant is to corrode or dissolve grain boundaries, which can be seen as irregular black lines under the common optical microscope. O True O False * 5 puntos Solid solution strengthening results from lattice strain interactions between impurity atoms and dislocations. O True O False A high strain-hardened metal, say, 65%CW, is crystallographically more * 5 puntos stable than a metal with less cold work (20%CW) because the former will soften at a significantly lower temperature. True O False * 5 puntos It is possible for two screw dislocations of opposite signs to annihilate each other because O Their dislocation lines are perpendicular O Their dislocation lines are parallel O Their dislocation lines are mixed O None of the options * 5 puntos For an edge dislocation, the relationship between the direction of the applied shear stress and the direction of the dislocation line motion is Perpendicular O Parallel 0 Inclined at 45° None of the options * 5 puntos The most important requirement of an Al-Cu precipitation-hardenable alloy is that the Aluminum-rich a-phase must have O A decrease in solubility of Cu in Al matrix as the temperature decreases A strong structure upon quenching below the solubility line A strong attractive force to retain copper ions O All the options A slip system is a crystallographic plane within which dislocation motion * 5 puntos occurs along O the most densely packed plane All the options O the most closely packed direction O a specific (plane)[direction] The microstructure of a quenched brass rod has * 5 puntos O None of the options A saturated microstructure A Ο Ο Ο Ο A martensitic microstructure O Strengthening precipitates
Metallography, crystallography, dislocation theory, and so forth. * 5 puntos The principle action of an etchant is to corrode or dissolve grain boundaries, which can be seen as irregular black lines under the common optical microscope. O True O False * 5 puntos Solid solution strengthening results from lattice strain interactions between impurity atoms and dislocations. O True O False A high strain-hardened metal, say, 65%CW, is crystallographically more * 5 puntos stable than a metal with less cold work (20%CW) because the former will soften at a significantly lower temperature. True O False * 5 puntos It is possible for two screw dislocations of opposite signs to annihilate each other because O Their dislocation lines are perpendicular O Their dislocation lines are parallel O Their dislocation lines are mixed O None of the options * 5 puntos For an edge dislocation, the relationship between the direction of the applied shear stress and the direction of the dislocation line motion is Perpendicular O Parallel 0 Inclined at 45° None of the options * 5 puntos The most important requirement of an Al-Cu precipitation-hardenable alloy is that the Aluminum-rich a-phase must have O A decrease in solubility of Cu in Al matrix as the temperature decreases A strong structure upon quenching below the solubility line A strong attractive force to retain copper ions O All the options A slip system is a crystallographic plane within which dislocation motion * 5 puntos occurs along O the most densely packed plane All the options O the most closely packed direction O a specific (plane)[direction] The microstructure of a quenched brass rod has * 5 puntos O None of the options A saturated microstructure A Ο Ο Ο Ο A martensitic microstructure O Strengthening precipitates