Two 3.5Ni-Cr-Mo-V steels have been studied in an attempt to gain insight into isothermal embrittlement of low-pressure rotors during service. An investigation was made to determine the influence which austenite grain size and type of acicular microstructure exert on temper embrittlement; particular attention was given to the thermal history of the steel, which may be a significant factor.
VISWANATANR. and SHAWB. J.: Scr. Metall., 1974, 8, 1255.
4.
WADEJ. and DOANED. V.: Metall. Trans., 1974, 5, 231.
5.
VISWANATANR. and JOSHIA.: ibid., 1976, 6A, 2289.
6.
RITCHIER. O., GENETIESL. C., and KNOTTJ. F.: ‘The microstructure and design of alloys’, Vol. 1, 124; 1974, London, The Metals Society.
7.
KAMEDAJ. and McMAHONC. J., Jr: Metall. Trans., 1980, 11A, 91.
8.
BUZZICHELLIG. and A. POLL CSM internal report no. 3281, Rome, July1979.
9.
BROZZOP. and BUZZICHELLIG.: Proc. Int. Conf. on ‘Analytical and experimental fracture mechanics’, (ed. SihG. and MirabileM.); 1981, Sijthoff and goordhoff, (in press).
