Deformation-induced carbide transformation (DICT) is first observed in M2 high-speed steel (HSS) wherein deformation enables a lower transformation temperature and enhanced transformation rate of M₂C carbide into M₆C and MC. Dislocations introduced into M₂C by pre-deformation act as nucleation sites of new precipitates and enable an evolution of the transformation pathway from a common interface-nucleation mode to a dislocation-nucleation manner. DICT offers an opportunity to circumvent the carbide-related trade-off between the wear resistance and toughness of M2 HSS.

中文翻译：

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M2高速钢中的形变引起的硬质合金转变

首先在M2高速钢（HSS）中观察到形变诱导的碳化物转变（DICT），其中形变使得较低的转变温度和提高的M ₂ C碳化物转变为M ₆ C和MC的转变速率。通过预变形引入M ₂ C的位错充当新沉淀的成核位点，并使转化路径从常见的界面成核模式演化为位错成核方式。DICT提供了一个机会来规避M2 HSS的耐磨性和韧性之间与硬质合金有关的折衷。