摘要
The slabs of a single crystal superalloy were poured with 2.2%Re, 3.2%Re and 4.2%Re and other element contents of the alloys were basically kept unchanged. The effects of Re on the ultimate tensile strength, creep rupture life and rafting of a single crystal superalloy were studied. The results show that with increasing Re content the ultimate tensile strength decreases but the plasticity increases at 982 degree C/248.2 MPa, 1038 degree C/206.8 MPa and 1070 degree C/176.8 MPa for the alloy; on the microstructure aspect, with increasing the creep rupture life of the alloy the rafting is getting bigger and bigger at the same test condition, and the rafting suppresses creep and increases creep rupture life in the single crystal superalloy. (Edited author abstract) 11 Refs.
The slabs of a single crystal superalloy were poured with 2.2%Re, 3.2%Re and 4.2%Re and other element contents of the alloys were basically kept unchanged. The effects of Re on the ultimate tensile strength, creep rupture life and rafting of a single crystal superalloy were studied. The results show that with increasing Re content the ultimate tensile strength decreases but the plasticity increases at 982 degree C/248.2 MPa, 1038 degree C/206.8 MPa and 1070 degree C/176.8 MPa for the alloy; on the microstructure aspect, with increasing the creep rupture life of the alloy the rafting is getting bigger and bigger at the same test condition, and the rafting suppresses creep and increases creep rupture life in the single crystal superalloy. (Edited author abstract) 11 Refs.
