アルミニウム合金ダイカストの静的強度に及ぼす鋳造欠陥の影響

概要

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To investigate the influence of casting defect on the tensile strength of aluminum die casting materials, tensile tests were conducted on three type of aluminum die casting materials. The main results obtained are as follows: (1) The tensile strength basically depends on the casting defect (Region II) but to some degrees (Region I), the tensile strength seldom depends on the casting defect. (2) The tensile strength of Region I was estimated by Eq. (a) as same as the tensile strength of Aluminum wrought products. (3) The tensile strength of Region II was estimated by Eq. (b).σ_B= 1/3 HV (a) σ_B= K_IC/β√π√area (b) HV: Vickers Hardness, K_IC: fracture toughness, √area: the square root of the area which is occupied by casting defect onto to the plane normal to the maximum tensile stress
一般社団法人日本機械学会の論文
2002-04-25