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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of thermomechanical processing in the intercritical region on hardenability of austenite of a dual-phase steel
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Effect of thermomechanical processing in the intercritical region on hardenability of austenite of a dual-phase steel

机译：临界区的热机械加工对双相钢奥氏体淬透性的影响

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摘要

Steels slabs containing different percentages of C, Mn, and Cr were intercritically heat treated and rolled at 780 and 790℃; they were then quenched to produce dual-phase microstructure in order to study the martensitic hardenability of austenite present in them. It was found that rolling of the two-phase (α + γ) microstructure elongated austenite particles and also reduced the martensitic hardenability of austenite particles, probably because the rolling increased the α/γ interfacial area, thus promoting the formation of ferrite during cooling. The martensite particles obtained in the rolled material were also elongated or "fibered" in the rolling direction. It was observed that the thermomechanical processing of a two-phase (α + γ) mixture has the detrimental effect of increasing the quenching power needed to yield a specific amount of martensite.
机译：对含有不同百分比的C，Mn和Cr的钢坯进行临界热处理，并在780和790℃下轧制;然后将它们淬火以产生双相微结构，以研究其中存在的奥氏体的马氏体可淬性。发现两相（α+γ）微观组织的轧制会延长奥氏体颗粒，并且还会降低奥氏体颗粒的马氏体淬透性，这可能是因为轧制增加了α/γ界面面积，从而促进了冷却过程中铁素体的形成。在轧制材料中获得的马氏体颗粒也在轧制方向上伸长或“成纤”。已经观察到，两相（α+γ）混合物的热机械加工具有有害的作用，即增加了产生特定量的马氏体所需的淬火能力。

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