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- W3143163527 abstract "The distribution of La in a superalloy Ni-20Cr-20Co.-18W is found out to be enriched mainly along its grain boundaries as oxide and oxysulphide. Some of the oxide may be formed the nuclei of the carbide M_6C. The La improves significantly the stress rupture life under 39 MPa at 1000℃ and raises the creep activation energy of the superalloy. The grain boundary energy was evaluated by thermal etching technique and the vacancy formation energy was measured by temperature dependence of resistivity. A theoretical interpretation was made that the contribution of La to decreasing boundary energy and increasing the vacancy formation energy is the main causes of the improvement of stress rupture property of the superalloy." @default.
- W3143163527 created "2021-04-13" @default.
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- W3143163527 date "1987-01-01" @default.
- W3143163527 modified "2023-09-25" @default.
- W3143163527 title "DISTRIBUTION OF La IN SUPERALLOY Ni-20Cr-20Co-18W AND ITS INFLUENCE ON STRESS RUPTURE PROPERTY" @default.
- W3143163527 hasPublicationYear "1987" @default.
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