5淬火时的转变: 标准成份Pф1钢之临界点(开始产生奥氏体)约在800°C左右。当加热到900°C时,组织中仍保留有α-相,在900～950°C以上组织由奥氏质与炭化物组成,提高温度促使炭化物溶解(图6)及奥氏质颗粒的生长(图7)。 在 1320～1350℃产生熔融,淬火后,呈现来氏体的共晶(图8)。 5 quenching transition: the standard component Pф1 steel critical point (began to produce austenite) is about 800 ° C or so. When heated to 900 ° C, the organization still retains α-phase, in the above 900 ~ 950 ° C organizations composed of austenite and carbide, increasing the temperature to promote carbide dissolution (Figure 6) and the growth of austenitic particles Figure 7). After melting at 1320 to 1350 ° C, the eutectic of martensite appeared after quenching (FIG. 8).