1. How to improve the mechanical properties (Hardness) and the physical properties (Conductivity)? How to prevent...

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Mechanical Engineering

1. How to improve the mechanical properties (Hardness) and thephysical properties (Conductivity)? How to prevent oxidation in amaterial`s chemical properties?

2. What is the difference in Cold work and hot work? Explainand give 2 examples of what application are use in each one.

3. How does the dislocations movement behave in metals andceramics? Explain the difference.
4. Explain the recrystallization phenomenon.

Answer & Explanation Solved by verified expert

3.6 Ratings (359 Votes)

1 To increase the HARDNESSor we can say hardeningthe substance Its a metallurgical process metal working Alsohardness is directly proportional to the uniaxial yield stress ofthe material at the location of imposed strain Following are someways to increase the hardness a Work hardening or strain hardening by cold working material is strained past its yield pointDuctile material becomes harder and stronger as it physicaldeformed formation and grouping of dislocationsb Hall petch method grain See Answer

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