⟩ What did Hirohito refer to as a tragic interlude, during a 1975 U.S. visit?
World War II.
World War II.
When we do cardonitriding or casehardening operation for a plain carbon steel the case depth, hardness & microstructure are not alike why and what are the basic thing, which makes such a difference.
Why we are doing post heating in alloy steel welding?
What are the compositions of brass, how can this metal be heat-treated, what is the melting point of this metal?
How we describe strain aging based on dislocation theory?
How does and why the recrystallization temperature of the metals affects on alloying?
What is proeutectoid ferrite and cementite?
What is the metallurgy use? What is the casting and forging?
Which is the only liquid in which gold is dissolved?
How much gold concentration should be in the organic phase (DBC) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? What is the ratio of DBC to oxalic acid solution in this step?
How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a Salt Bath?