Atomic composition of the metastable β″ phase precipitate in an Al –Mg–Si alloy
-
M. Takeda
,
T. Kurumizawa
Abstract
The atomic composition of a metastable β″ phase precipitate, which is responsible for strengthening of Al –Mg – Si alloys in a precipitation-hardening process, was studied by means of Vickers microhardness tests, differential scanning calorimetry (DSC), transmission electron microscopy (TEM), and energy-dispersive X-ray (EDX) analyses. On the basis of the present TEM-EDX experiments and DSC measurements, our study revealed that the β″ phase precipitate formed in Al –Mg – Si alloys has a high silicon concentration. It was also concluded that the precipitation behavior of the β″ phase coincides with the precipitation occurring in the binary Al –Si alloy.
We thank HITACHI High-Technologies Ltd. for the use of their 300 kV microscope, and Ms. T. Yaguchi for her assistance in the TEM experiments.
References
1 Dutta, I.; Allen, A.: J. Mater. Sci. Lett. 10 (1991) 323.10.1007/BF00719697Search in Google Scholar
2 Thomas, G.: J. Inst. Metals 90 (1961 –1962) 57.10.1039/tf9615701603Search in Google Scholar
3 Jacobs, M.H.: Phil. Mag. 26 (1972) 1.10.1080/14786437208221015Search in Google Scholar
4 Takeda, M.; Shirai, T.; Sumen, S.; Fukui, K.; Sakaguchi, M., in: T. Sato et al. (eds.), Proc. ICAA6, Keikinzokugakkai, Tokyo (1998) 609.Search in Google Scholar
5 Takeda, M.; Ohkubo, F.; Shirai T.; Fukui, K.: J. Mater. Sci. 33 (1998) 2385.10.1023/A:1004355824857Search in Google Scholar
6 Huppert, G.; Hornbogen, E., in: T.M. Sanders et al. (eds.), Proc. ICAA4 Georgia Inst. Technology, Atlanta (1994) 628.Search in Google Scholar
7 Gupta, A.K.; J. Lloyd, D., in: L. Arnberg et al. (eds.), Proc. ICAA3, Norwegian Inst. of Technology, Trondheim (1992) 21.Search in Google Scholar
8 Lynch, L.M.; Brown, J.P.; Jacobs, M.H.: Acta Metall. 30 (1982) 1389.10.1016/0001-6160(82)90159-6Search in Google Scholar
9 Matsuda, K.; Tada, S.; Ikeno, S., in: As Ref. [6], p. 605.Search in Google Scholar
© 2002 Carl Hanser Verlag, München
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- Notifications/Mitteilungen
- Personen
- DGM conferences
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- Mechanical properties of Cu/In – 48 Sn/Cu diffusion-soldered joints
- Effect of ultrasonic (cavitation) treatment of the melt on the microstructure evolution during solidification of aluminum alloy ingots
- Computer simulation of the long-range diffusional transformation based on the postulated principle of maximum dissipation rate of Gibbs energy
- Kinetics of growth of intermetallics in the Cu–Sn system
- Atomic composition of the metastable β″ phase precipitate in an Al –Mg–Si alloy
- Interfacial tension of metastable immiscible alloys: a novel measurement concept
- On the kinetics of the initial oxidation of iron and iron nitride
- Synthesis and characterisation of MgAlON
- Kinetic studies of oxidation of MgAlON and a comparison of the oxidation behaviour of AlON, MgAlON, O’SiAlON–ZrO2, and BN–ZCM ceramics
- Study on warm rolling of AISI 1015 carbon steel
- Experimental study on elastic modulus and damping capacity of woodceramics
- Texture development during cold rolling of unidirectionally solidified Al–Al3Ni alloy
- Wear behavior of A356/M7C3 and A356/SiC particulate metal matrix composites
- Microstructural characterization and microhardness of rapidly solidified Al –Ce alloys
- Effect of quenching rate on the microstructure of rapidly solidified Al –Sr alloys
- The protective mechanism of the native rust layer on Cr-containing steels exposed to marine atmosphere
- Notifications/Mitteilungen
- Personen
- DGM conferences
