What is the composition of d2?

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How we describe strain aging based on dislocation theory?

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Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.

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What is a silver and deming drill bit?

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A plain carbon steel contains 45 wt% of proeutectoid ferrite. What is its average carbon content in weight percent? I know that you need to use a tie line in the phasediagram, but my book does not really give a good example to go by?

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difference between sand casting and shell casting

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Is it possible to determine the heat treatment condition in stainless steel (astm a 479 gr xm-19) by checking the microstructure?

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Which type of furnace is required in solution annealing?

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Define what is the difference between diagrams of it and ct in heat treatment of steels?

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What is or what characterize the thermodynamic state of metal (structure of metal)?

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Define what is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. When both are used in the lost-wax method?

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What is hot working of metals? Give some of its principal methods.

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