forging stress
6.PHOTOELASTIC STUDY OF DYNAMIC STRESS CONCENTRATION AT SWALLOWTAIL ON HAMMER FORGING DIE
9.The result denotes that quenched and tempered heavy forging cooling in air when its center was cooled to 400℃, not only residual stress did bit not affect, but on impact toughness at room temperature have a bit of improvement, with the maximum instantaneous elastic stress did not generate dangerous of cracking.

