Hydrogen-induced amorphization in Ce-Al alloys
- Iwate Univ., Morioka, Iwate (Japan). Dept. of Materials Science and Technology
- Tohoku Univ., Sendai (Japan). Inst. for Materials Research
Hydrogen-induced amorphization (HIA), i.e., formation of an amorphous phase by hydrogen absorption of intermetallic compounds, has been investigated in the last decade as a novel preparation method of amorphous alloys without liquid quenching. HIA is reported in many compounds, which are almost C15 Laves RM{sub 2} compounds (R = rare earth metal, M = ferromagnetic metal of Fe, Co, Ni). This leads to a question whether HIA is a popular phenomenon limited just to C15 Laves RM{sub 2} compounds. Recently, the present authors have shown that HIA occurs in many R-Al compounds (R = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er as well as Y). Furthermore, the behavior of amorphization from crystalline state and the behavior of crystallization from the corresponding amorphous state in R-Al alloys are fairly different from those in Laves RM{sub 2} compounds. For a more detail study as presented in this paper, Ce-Al alloys have been chosen because they are taken as representative. In the Ce-Al alloys, there are five intermetallic compounds. As CeAl{sub 3} and Ce{sub 3}Al{sub 11} seldom absorb hydrogen, this study will focus on Ce{sub 3}Al, CeAl and CeAl{sub 2}.
- OSTI ID:
- 382481
- Journal Information:
- Scripta Materialia, Vol. 35, Issue 7; Other Information: PBD: 1 Oct 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
A correlation between stability of compounds and structure of hydrogen-induced amorphous alloys in GdM[sub 2](M = Fe, Co, Ni)
Microstructural defects in some rare earth laves phase single crystals