鋼材の破壊靱性評価法としての落重試験法の検討(<特集>鉄鋼材料の破壊靱性)

概要

論文の詳細を見る
A study of the drop weight test procedure for the evaluation of fracture toughness of steels has been made using normal P-2 type specimen and fatigue notch type specimen. NDTT_s of the steel having high susceptibility to temper embrittlement, which are evaluated by using P-2 type specimen, are significantly affected by the heat affected zone under the crack starter bear. In this case, the drop weight test of the fatigue notch type specimen is recommended. There are some steels showing the large deviation of NDTT from the relation between NDTT and FATT which are widely known. For these steels, a method to estimate the deviation has been proposed. It has been also found that NDTT has a good relationship to shear fracture transition property of the steels obtained by the fatigue crack notch Charpy impact test.
社団法人日本鉄鋼協会の論文
1978-06-01