... 1110 °F) for low-alloy steels. This treatment causes a decrease in toughness as determined with Charpy V-notch impact specimens (Ref 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100, 101, 102, 103, ... A, Vol 14A, June 198 3, P 112 1-1 133 126. H. Kwon and C.H. Kim, Tempered Martensite Embrittlement in Fe-Mo-C and Fe-W-C Steel, Metall. Trans. A, Vol 14A, July 198 3, p 138 9- 1 394 127. R.M. ... Treat., Vol 1, June 197 9, p 93 89. G.F. Vander Voort, Visual Examination and Light Microscopy, in Fractography, Vol 12, 9th ed., Metals Handbook, ASM INTERNATIONAL, 198 7, p 9 1-1 65 Embrittlement...