l. True or False. Must cLEARLY ExPLAIN the false statements. (20 pts) only 1. of

Question

l. True or False. Must cLEARLY ExPLAIN the false statements. (20 pts) only 1. offset and parallel to the straight portion of the stress-strain curve is the method used to calculate the yield strength of metals. 2. Metallic bonding involves the sharing of electrons. 3. The ideal density of an element and the measured density of the same element are the same. 4. Elastic deformation can be undone. 5. Cold work must be conducted at temperatures below 40% of the melting temperature. 6. Tempered austenite has high strength but it is also ductile. The mean stress of a reverse cyclic stress is always zero. & Stress is defined as the change in the size or shape of the material as a result of a force on the material.

Explanation / Answer

1.) true

2.) true

3.) false...it will depend on the measuring conditions

4.) true

5.) true

6.) true

7. ) true

8.) false...it is force per unit area

9.) false...it is related with volume occupied

10.) false..this is not necessarily true

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