The structural transformation of the CsCl-type compound TiNi has been investigated by X-ray-diffraction, calorimetric, and metallographic methods. The transition is a first-order one, with a latent heat of 370 ± 20 cal/g-atom. It occurs rapidly and with small hysteresis in bulk material, the transition temperature varying with composition within the range 48–52 at.-%nickel, and its martensitic character was confirmed by metallographic and electron-microscope observations. The martensite (low-temperature) structure is probably of low symmetry. There is some evidence that different transition products are formed on either side of the stoichiometry. Oxygen level significantly affects the transition behaviour.
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References
1.
DwightA. E., Trans. Met. Soc. A.LM.E., 1959, 215, 283.
2.
StiiweH.-P. and ShimomuraY., Z. Metallkunde, 1960, 51, 180.
3.
PietrokowksyP. and YoungkinF. G., J. Appl. Physics, 1960, 31, 1763.
4.
PurdyG. R. and ParrJ. G., Trans. Met. Soc. A.LM.E., 1961, 221, 636.
5.
BuehlerW. J. and WileyR. C., Trans. Amer. Soc. Metals, 1962, 55, 269.
6.
GilfrichJ. V., “Proceedings of the XI Conference on Applica-tions of X-Ray Analysis, 1962”, p. 74. 1963: New York (Plenum Press).
7.
BuehlerW. J., GilfrichJ. V., and WileyR. C., J. Appl. Physics, 1963, 34, 1475.
8.
BuehlerW. J. and WileyR. C., [U.S.] Naval Ordnance Lab. Tech. Rep., (61–75), 1961; (ASTIA 266607).
9.
WangF., SyelesA. M., ClarkW. L., and BuehlerW. J., J. Appl. Physics, 1964, 35, 3620.
10.
BuehlerW. J. and WangF., Paper presented at “Fifth Inter-national Symposium on Reactivity of Solids” (Munchen, 1964).
11.
WangF. E., BuehlerW. J., and PickartJ. S., J. Appl. Physics, 1965, 36, 3232.
12.
DautovichD. P. and PurdyG. R., Canad. Met. Quart., 1965, 4, (2), 129.
13.
BallA., J. Inst. Metals, 1964–65, 93, 548 (discussion).
14.
GreningerA. B. and MooradianV. G., Trans. Amer. Inst. Min. Met. Eng., 1938, 128, 337.
15.
MassalskiT. B. and BarrettC. S., ibid., 1957, 209, 455.
16.
ChangL. C. and ReadT. A., ibid., 1951, 191, 47.
17.
ChangL. C., Acta Cryst., 1951, 4, 320.
18.
HultgrenR., OrrR. L., AndersonP. D., and HalleyH. H., “Thermodynamic Properties of Metals and Alloys”, p. 91. 1960: New York and London (John Wiley).
19.
SmithellsC. J., “Metals Reference Book”, 3rd edn., Vol. II, pp. 616et seq. 1962: London (Butterworths).
20.
DorseyE. N., “Properties of Water”, p. 467. 1940: New York (Reinhold).
21.
PearsonW. B., “Handbook of Lattice Spacings”, p. 860. 1959: London (Pergamon Press).
22.
HansenM. and AnderkoK., “Constitution of Binary Alloys”, 2nd edn., p. 1051. 1958: New York and London (McGraw-Hill).
23.
MuellerM. H. and KnottH. W., Trans. Met. Soc. A.LM.E., 1963, 227, 674.
24.
DuwezP. and TaylorJ. L., Trans. Amer. Inst. Min. Met. Eng., 1950, 188, 1173.
25.
PooleD. M. and Hume-RotheryW., J. Inst. Metals, 1954 –55, 83, 473.
