Precipitation in Al-Li-Si ternary alloys
Precipitation behavior of Al-2.0mass%Li-0.2mass%Si and Al-0.8mass%Li-0.5mass%Si ternary alloys has been investigated mainly by means of micro-Vickers hardness measurements and transmission electron microscopy. Aging treatments were performed at constant temperatures in the range of 328 to 573K. Age...
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| Published in | Journal of Japan Institute of Light Metals Vol. 43; no. 10; pp. 528 - 532 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
Tokyo
The Japan Institute of Light Metals
30.10.1993
Keikinzoku Gakkai, c/o Hibiya Asahi Seimeikan, Keikinzoku Kyokai |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0451-5994 1880-8018 |
| DOI | 10.2464/jilm.43.528 |
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| Abstract | Precipitation behavior of Al-2.0mass%Li-0.2mass%Si and Al-0.8mass%Li-0.5mass%Si ternary alloys has been investigated mainly by means of micro-Vickers hardness measurements and transmission electron microscopy. Aging treatments were performed at constant temperatures in the range of 328 to 573K. Age hardening occurs at all temperatures. The precipitation of both the δ' (Al3Li) phase and fine equilibrium (AlLiSi: T) phase contributes to the hardness increase. The shape of the T phase is rod-like at the early stage of aging and changes to plate-like with prolonged aging time. The orientation relationship between the matrix (α) and T phase is as follows: (001)α//(110)T, [100]α//[001]T. |
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| AbstractList | Precipitation behavior of Al-2.0 mass%Li-0.2 mass%Si and Al-0.8 mass%Li-0.5 mass%Si ternary alloys has been investigated mainly by means of micro-Vickers hardness measurements and transmission electron microscopy. Aging treatments were performed at constant temperatures in the range of 328-573K. Age hardening occurs at all temperatures. The precipitation of both the delta '(Al sub 3 Li) phase and fine equilibrium (AlLiSi:T) phase contributes to the hardness increase. The shape of the T phase is rod-like at the early stage of aging and changes to plate-like with prolonged aging time. The orientation relationship between the matrix ( alpha ) and T phase is as follows: (001) sub a parallel to)(110) sub T ,[100] sub alpha parallel to)[001] sub T . Precipitation behavior of Al-2.0mass%Li-0.2mass%Si and Al-0.8mass%Li-0.5mass%Si ternary alloys has been investigated mainly by means of micro-Vickers hardness measurements and transmission electron microscopy. Aging treatments were performed at constant temperatures in the range of 328 to 573K. Age hardening occurs at all temperatures. The precipitation of both the δ' (Al3Li) phase and fine equilibrium (AlLiSi: T) phase contributes to the hardness increase. The shape of the T phase is rod-like at the early stage of aging and changes to plate-like with prolonged aging time. The orientation relationship between the matrix (α) and T phase is as follows: (001)α//(110)T, [100]α//[001]T. |
| Author | TANIBUCHI, Yuji YAMAMOTO, Atsushi SAKAI, Ryutaro TSUBAKINO, Harushige NOZATO, Ryoichi |
| Author_xml | – sequence: 1 fullname: YAMAMOTO, Atsushi organization: Faculty of Engineering, Himeji Institute of Technology – sequence: 1 fullname: TANIBUCHI, Yuji organization: Graduate School, Himeji Institute of Technology – sequence: 1 fullname: NOZATO, Ryoichi organization: Himeji Institute of Technology – sequence: 1 fullname: TSUBAKINO, Harushige organization: Faculty of Engineering, Himeji Institute of Technology – sequence: 1 fullname: SAKAI, Ryutaro organization: Suzuki Motor Corp |
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| References | 3) E. A. Starke, Jr., T. H. Sanders, Jr. and I. G. Palmer: J. Met., 33 (1981), 24. 7) G. Champier and F. H. Samuel: Aluminum-Lithium Alloy III, (ed. C. Baker et al.), The Inst. Metals, London, (1986), 131. 4) E. A. Starke, Jr. and F. S. Lin: Metall. Trans. A, 13 (1982),2259. 6) M. D. Hanna and A. Hellawell: Metall. Trans. A, 15 (1984), 595. 2) H. K. Hardy: J. Inst. Metals, 84 (1955-56), 429. 8) R. Nozato and G. Nakai: Trans. Jpn. Inst. Met., 18 (1977), 679. 5) N. C. Goel and J. R. Cahoon: J. Phase Equilibria,12 (1991), 225. 1) 古川稔,美浦康弘,根本実:日本金属学会会報,23(1984),172. 9) 高橋恒夫,里達雄:軽金属,36(1986),207. |
| References_xml | – reference: 7) G. Champier and F. H. Samuel: Aluminum-Lithium Alloy III, (ed. C. Baker et al.), The Inst. Metals, London, (1986), 131. – reference: 2) H. K. Hardy: J. Inst. Metals, 84 (1955-56), 429. – reference: 4) E. A. Starke, Jr. and F. S. Lin: Metall. Trans. A, 13 (1982),2259. – reference: 8) R. Nozato and G. Nakai: Trans. Jpn. Inst. Met., 18 (1977), 679. – reference: 9) 高橋恒夫,里達雄:軽金属,36(1986),207. – reference: 1) 古川稔,美浦康弘,根本実:日本金属学会会報,23(1984),172. – reference: 6) M. D. Hanna and A. Hellawell: Metall. Trans. A, 15 (1984), 595. – reference: 3) E. A. Starke, Jr., T. H. Sanders, Jr. and I. G. Palmer: J. Met., 33 (1981), 24. – reference: 5) N. C. Goel and J. R. Cahoon: J. Phase Equilibria,12 (1991), 225. |
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| Snippet | Precipitation behavior of Al-2.0mass%Li-0.2mass%Si and Al-0.8mass%Li-0.5mass%Si ternary alloys has been investigated mainly by means of micro-Vickers hardness... Precipitation behavior of Al-2.0 mass%Li-0.2 mass%Si and Al-0.8 mass%Li-0.5 mass%Si ternary alloys has been investigated mainly by means of micro-Vickers... |
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| SubjectTerms | age hardening Al-Li-Si alloy orientation relationship precipitation transmission electron microscopy |
| Title | Precipitation in Al-Li-Si ternary alloys |
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