Metallurgical and Materials Transactions A

, Volume 25, Issue 12, pp 2615–2619 | Cite as

Study on the transformation mechanism of α1 plates in a Cu-Zn-Ai alloy

  • Hong-Sheng Fang
  • Chun-Ming Li
Pacific Rim Symposium-Part II

Abstract

Transmission electron microscope (TEM) studies of the bainitic transformation in Cu-25.9 pct Zn-3.75 pct Al alloy were performed. At the initial formation stage from the matrix, precipitated α1 plates were without internal stacking faults. It was found that there exist three-dimensional superledges on the broad faces of α1 plates, with a spacing and height of about 50 to 230 nm and 10 to 40 nm, respectively. Terraces on the faces of α1 plates are parallel to the habit plane, which is (114)α1. Evidence indicates that the superledges are mobile and that the α1 plates thicken by their movement. The results show that growth of α1 plates is consistent with a diffusion-controlled ledgewise mechanism.

Keywords

Martensite Material Transaction Bainite Riser Habit Plane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© The Minerals, Metals and Materials Society, and ASM International 1994

Authors and Affiliations

  • Hong-Sheng Fang
    • 1
  • Chun-Ming Li
    • 1
  1. 1.Division of Metallic Materials, Department of Materials Science and EngineeringTsinghua UniversityBeijingPeople’s Republic of China

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