L L+a Solidification Te a Ideal solution (a) A B 人 玉 1 +a x d L L1*L2 L2 Te 民 b L2 l +a a M L2+B Te L+a 02 (b) L2+ Q+O2 E increasingly L d +B a-y B B a+B L+ 9 positive A 0的 02 1+a2 (c) 工 Homogenous monotectic 人0 C 02 1+a2 (d)
Solidification Homogenous & monotectic
Eutectic Proeutectic a=24% 100%Liquid Eutectic o Liquid =76% Eutectic B- Alloy 2 Alloy 1 327 Solidus 300 Liquidus Proeutectic a 51% ●a Liquid Liquid Liquidus =49% 250 a+liquid 200 d B+liquid Solidus 183 B 150 Solvus a+B Eutectic point 100 Proeutectic a Solvus 50H 192 40.0 61.9 975 0 10 20 30 40 50 60 70 100% 80 90 100% Eutectic B Sn Pb Eutectic a Weight percent tin
Eutectic
peritectic liquid a+liquid B+liquid
peritectic
Metallography Martensite Bainite Austenite
Metallography Martensite Bainite Austenite