about the non-martensite structure
as we know the non-martensitestructure are harmful to the fatigue property. But the thickness and shape of this structure is not defined. who have the test date to show what the thickness and shape is appropriatable? the thickness and shape ofnon-martensite ? How do you read the non-martensite ?Generally,Check the hardness valuewhether it is martensite structure. yeah,each kind of microstructure has its particular hardness value
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