ABSTRACT
This chapter discusses new methods of quenching named IQ1, IQ2, and IQ3 processes. IQ-1 is a two-step quenching process. In the rst s tep, a p art i s co oled s lowly (in o il,
aqueous polymer solution, in molten salt, on air or air ow, etc.). And upon cooling to the martensite start temperature, the part i s i ntensively cooled within the martensite range until the cooling process is completed [1]. In the rst step, the austenite-martensite transformation is delayed almost completely and intensive cooling is performed only within the martensite range. At the rst step, the temperature gradient is not large and the temperature at all the points of the cross-section uniformly goes to the martensite start temperature simultaneously. As a rule, oils are at the optimal temperature and polymers are at the optimal concentration.
