Al-Si-Mg-Zn合金の析出過程におよぼすBeおよびNaの影響 アルミニウム合金の時効現象に関する研究(第3報)

西 成基; 篠田 武雄

doi:10.2464/jilm.22.386

Al-Si-Mg-Zn合金の析出過程におよぼすBeおよびNaの影響

アルミニウム合金の時効現象に関する研究(第3報)

西成基, 篠田武雄

著者情報

ジャーナルフリー

1972 年 22 巻 6 号 p. 386-394

DOI https://doi.org/10.2464/jilm.22.386

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発行日: 1972/06/30 受付日: 1972/01/25 J-STAGE公開日: 2008/07/23 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/07/23 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : Effects of Be and Na on aging phenomena of Al-Si-Mg-Zn alloys were investigated mainly through electrical resistivity measurement in liquid nitrogen and electron microscopy. The results obtained were as follows:
(1) Influence of Be addition on formation of G. P. zones in Al-Si-Mg-Zn alloys was investigated. Isothermal aging curves with characteristic shape and very large value of t_M at 70°C were observed in Al-Si-Mg-Zn alloys. This was explained on the assumption that needle like G. P. zones absorb many vacancies at a formation period of G. P, zones. This assumption further explains retardation of formation of spherical zones at an initial aging period. However, Be was enriched in both the spherical (MgZn₂) and the needle like (Mg₂Si) zones and increased density of both types of zones. Overaging at high temperature aging was suppressed by Be addition.
(2) Structural changes during age hardening were investigated by means of an electron microscope. It was found that aging at 170°C for 15hrs. produced the intermediate phases of MgZn₂ and Mg₂Si.
(3) Na addition suppressed aging of Al-Si-Mg-Zn alloys.
Right : Effects of Be and Na on aging phenomena of Al-Si-Mg-Zn alloys were investigated mainly through electrical resistivity measurement in liquid nitrogen and electron microscopy. The results obtained were as follows:
(1) Influence of Be addition on formation of G. P. zones in Al-Si-Mg-Zn alloys was investigated. Isothermal aging curves with characteristic shape and very large value of t_M at 70°C were observed in Al-Si-Mg-Zn alloys. This was explained on the assumption that needle like G. P. zones absorb many vacancies at a formation period of G. P. zones. This assumption further explains retardation of formation of spherical zones at an initial aging period. However, Be was enriched in both the spherical (MgZn₂) and the needle like (Mg₂Si) zones and increased density of both types of zones. Overaging at high temperature aging was suppressed by Be addition.
(2) Structural changes during age hardening were investigated by means of an electron microscope. It was found that aging at 170°C for 15hrs. produced the intermediate phases of MgZn₂ and Mg₂Si.
(3) Na addition suppressed aging of Al-Si-Mg-Zn alloys.

訂正日: 2008/07/23 訂正理由: - 訂正箇所: 引用文献情報訂正内容: Wrong : 5) A. Kelly, R. B. Nicholson: Progress in Metal Science, 10 (1963), 218.
6) M. Hansen: Constitution of Binary alloys, (1958)
7) C. J. Smithels: Metals Reference Book, Butter-Worth, London, (1967).
8) A. Lutts: Acta Met., 9 (1961), 577.
10) A. J. Perry: Acta Met., 14 (1966), 1193.
12) C. Panseri, T. Federighi: Acta Met., 8 (1960), 217
13) J. Takamura, H. Kosuge, H. Shimizu: Phys. Letters, 16 (1965), 223.
14) H. W. L. Phillips: J. Inst. Metals, 72 (1946), 151.
16) G. Thomas, Nutting: J. Inst. Metals, 88 (1959), 81.
18) S. Ceresara, P. Fiorini: Phil. Mag., 19 (1969), 205.

Right : 5) A. Kelly, R. B. Nicholson: Progress in Metal Science, 10 (1963), 218.
6) M. Hansen: Constitution of Binary alloys, (1958)
7) C. J. Smithels: Metals Reference Book, Butter-Worth, London, (1967).
8) A. Lutts: Acta Met., 9 (1961), 577.
10) A. J. Perry: Acta Met., 14 (1966), 1143.
12) C. Panseri, T. Federighi: Acta Met., 8 (1960), 217
13) J. Takamura, H. Kosuge, H. Shimizu: Phys. Letters, 16 (1965), 223.
14) H. W. L. Phillips: J. Inst. Metals, 72 (1946), 151.
16) G. Thomas, Nutting: J. Inst. Metals, 88 (1959), 81.
18) S. Ceresara, P. Fiorini: Phil. Mag., 19 (1969), 205.

訂正日: 2008/07/23 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

Effects of Be and Na on aging phenomena of Al-Si-Mg-Zn alloys were investigated mainly through electrical resistivity measurement in liquid nitrogen and electron microscopy. The results obtained were as follows:
(1) Influence of Be addition on formation of G. P. zones in Al-Si-Mg-Zn alloys was investigated. Isothermal aging curves with characteristic shape and very large value of t_M at 70°C were observed in Al-Si-Mg-Zn alloys. This was explained on the assumption that needle like G. P. zones absorb many vacancies at a formation period of G. P. zones. This assumption further explains retardation of formation of spherical zones at an initial aging period. However, Be was enriched in both the spherical (MgZn₂) and the needle like (Mg₂Si) zones and increased density of both types of zones. Overaging at high temperature aging was suppressed by Be addition.
(2) Structural changes during age hardening were investigated by means of an electron microscope. It was found that aging at 170°C for 15hrs. produced the intermediate phases of MgZn₂ and Mg₂Si.
(3) Na addition suppressed aging of Al-Si-Mg-Zn alloys.

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