The results shows that the smooth and notch fatigue strength of the meta-bainite consisting of bainite ferrite and retained austenite is higher than that of martensite.

与马氏体组织相比，由贝氏体铁素体和残余奥氏体组成的准贝氏体组织，其光滑及缺口疲劳强度均较高。

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Compared with the forging die steel, casting forging die steel although toughness is low, but high strength, red hardness is good, with low notch sensitivity and high resistance to thermal fatigue.

与锻造模具钢相比，铸造热锻模具钢虽然韧性低，但强度高、红硬性好，具有较低的缺口敏感性和较高的抗热疲劳性。

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