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- W3036885717 abstract "C15 Laves phase intermetallic compounds are potential high temperature structural materials, of which C15 HfV 2 is particularly attractive. At room temperatures (RT), the C15 Laves phase has a fcc-based structure with a lattice parameter a=7.4 Å, as shown in Fig. 1. Sensitive specific heat measurements indicate that HfV 2 undergoes a structural transformation at 115 K, as shown in Fig. 2. The crystal structure of the low temperature (LT) phase of HfV 2 is not unambiguously known, although some studies have been done. A HfV 2 alloy was made by arc-melting. The alloy was homogenized at 1200°C for 120h. In a preliminary study we have concentrated on selected area diffraction patterns (SADs) along different zone axes of C15 structure at 83 K, using a Philips CM 30 microscope with a liquid nitrogen cold stage. A <100> C15 SAD at RT is shown in Fig. 3 (a). At 83 K, SADs along some <100> C15 show (100), (200), and (300) superlattice spots, as shown in Fig 3 (b), while SADs along other <100> C15 indicate (110) and (200) superlattice spots, as shown in Fig. 3 (c)." @default.
- W3036885717 created "2020-06-25" @default.
- W3036885717 creator A5014058989 @default.
- W3036885717 creator A5089712902 @default.
- W3036885717 date "1995-08-13" @default.
- W3036885717 modified "2023-09-27" @default.
- W3036885717 title "TEM investigation of the low temperature phase of HfV2" @default.
- W3036885717 cites W1969652845 @default.
- W3036885717 cites W2079415609 @default.
- W3036885717 doi "https://doi.org/10.1017/s042482010013763x" @default.
- W3036885717 hasPublicationYear "1995" @default.
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