18%Mn-18%Cr-N鋼の衝撃靱性遷移挙動におよぼす化学成分と予歪の影響
1992 年 78 巻 12 号 p. 1846-1853
詳細
1992 年 78 巻 12 号 p. 1846-1853
Transition behaviour of impact absorbed energy is well known for 18%Mn-18%Cr-N steel. The cleavage-like transgranular facets are detected on fracture surface of impact specimens tested at low temperature. Impact absorbed energy decrease when these cleavage-like facets are found on fracture surface of test specimen.
The ductile-brittle transition temperature of the materials shifted to lower temperature by increased of nickel content, decrease of nitrogen content or pre-straining at high temperature.
The relationship between cleavage-like fracture and plastic deformation stracture at the crack tip of impact test specimen has been investigated.
