DQuestion 6 9 pts Which of the following processes will tend to strengthen a typ

Question

DQuestion 6 9 pts Which of the following processes will tend to strengthen a typical pure metal? Assume that we are comparing the stress-strain response of the original metal to the stress-strain responses of the room-temperature altered metals after these separate processes have been conducted Select all that apply. O Cold-working the pure metal Hot-working the pure metal Adding solute to form a solid solution O Precipitation a secondary phase O Annealing the pure metal O Melting then casting the pure metal Increasing the dislocation density (dislocations count per unit volume) Decreasing the grain density (grain count per unit volume) O Increasing the average grain size

Explanation / Answer

Here are the processes out of the given, that will increase the strength of the pure metal:

1. Cold working of the pure metal
2. Adding solute to form a solid solution
3. Increasing the dislocation density.
4. Annealing
5. Precipitation a secondary phase.

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