Materials Transactions Online

Transactions of the Japan Institute of Metals, Vol. 12 No. 3 (1971) pp.159-165
© 1971 The Japan Institute of Metals

Electron Microscopic Observation on the Precipitation Sequence in Cu-Be Alloys*

Satoru Yamamoto**, Masaaki Matsui**
and Yotaro Murakami**

Electron microscopic observation on the precipitation sequence in Cu-Be alloys was carried out. Clear images of G. P. zones on {100} planes, the ordered phase, the intermediate γ'-phase, the equilibrium γ-phase and then the informations about the size, shape and distribution in each stage were obtained more clearly than before. Strains associated with precipitates in the early stages of aging and some lattice defects such as dislocations, twins and stacking faults were observed, and these mean that the precipitation in Cu-Be alloys is associated with an exclusively large strain. These electron microscopic results were discussed as compared to those obtained by other methods.

(Received September 28, 1970)


* Presented at the Annual Meeting of the Japan Institute of Metals, April, 1970, Tokyo, Japan.

** Department of Metallurgy, Faculty of Engineering, Kyoto University, Kyoto, Japan.

Citing Article(s):

  1. Materials Transactions, JIM, Vol.35 No.3 (1994) pp.161-167 :
    Effects of Co, Ni and Ti Additions on the Cellular Precipitation in Cu-2%Be Alloy
    Masamichi Miki and Yoshikiyo Ogino
  2. Materials Transactions, JIM, Vol.36 No.9 (1995) pp.1118-1123 :
    Effect of Quenching Temperature on the Intragranular and Cellular Precipitations in Cu-1.5%Be Binary Alloy
    Masamichi Miki and Yoshikiyo Ogino
  3. Materials Transactions, JIM, Vol.39 No.4 (1998) pp.455-462 :
    Influence of Grain Size and Quenching Rate on the Age-Hardening Behavior of Cu-2%Be Alloy
    Masamichi Miki*, Atsushi Tenma*, Shuhei Ishikawa**
    and Yoshikiyo Ogino*

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