The effect of Ti-addition on the L1[sub 2] precipitates of rapidly-solidified Al-Cr-Zr alloy
- National Chiao Tung Univ., Hsinchu (Taiwan, Province of China). Inst. of Materials Science and Engineering
The rapidly solidified (RS) Al-Cr-Zr alloy, possessing excellent strength, ductility and thermal stability in elevated temperatures has received considerable attention in the past decade. The age-hardenable Al-Cr-Zr alloys derive their elevated temperature strength and thermal stability from homogeneous precipitation of metastable L1[sub 2]-Al[sub 3]Zr and chromium retained in solid solution. In the present work, titanium was added to Al-Cr-Zr alloy to form a quaternary system prepared by rapid solidification. The microstructure of the RS ribbon was studied with particular interest in several L1[sub 2] phases present in this alloy. The coarsening kinetics of the L1[sub 2] dispersoids on aging at 350 C were also presented.
- OSTI ID:
- 6989717
- Country of Publication:
- United States
- Language:
- English
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