Abstract

The structure and the mechanical properties of a cast high-nitrogen austenitic steel are studied after hot and cold deformation. The as-cast steel contains the FeCrB and BN phases. During hot deformation, the B₁₃N₁₃C₇₄ phase forms. This phase has a layered structure and is easily deformed during hot or cold rolling. The existence of the B₁₃N₁₃C₇₄ phase only slightly changes the strength and the ductility, but it substantially decreases the impact toughness of the steel as compared to that of similar boron-free Cr–Mn–Ni high-nitrogen austenitic steels.

中文翻译：

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感应熔炼含硼高氮奥氏体钢的组织，相组成和力学性能

摘要

研究了铸态高氮奥氏体钢在热变形和冷变形后的组织和力学性能。铸态钢包含FeCrB和BN相。在热变形期间，形成B ₁₃ N ₁₃ C ₇₄相。该相具有层状结构，并且在热轧或冷轧期间容易变形。B ₁₃ N ₁₃ C ₇₄相的存在只会稍微改变强度和延展性，但是与类似的无硼Cr-Mn-Ni高氮奥氏体钢相比，它的冲击韧性大大降低。