fracture toughness 1

[somi99]

does fracture toughness value increases with hardness value

 

[CoryPad]

Usually those two properties are inversely proportional. An increase in hardness will decrease toughness, but this is not universal.

 

[EdStainless]

In many metals the fracture toughness increases as the strength (and hardness) increases, until you get to a tipping point where there is not enough remaining ductility to blunt crack propagation, then toughness drops with increasing strength and hardness.

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