The structure, phase composition and impact toughness of specimens cut from different-thickness regions of a billet with cross section 160 × 160 mm from continuously cast high-speed steel R6M5 are studied. It is shown that the macro- and microstructure, phase composition, and process ductility of the continuously cast high-speed steel R6M5 are substantially higher than those of the steel obtained by traditional casting into molds.

中文翻译：

---

R6M5钢连铸坯的组织和性能的特殊特征

研究了从R6M5高速铸造连铸坯的不同厚度区域（横截面为160×160 mm）切割而成的试样的结构，相组成和冲击韧性。结果表明，连续铸造的高速钢R6M5的宏观和微观结构，相组成和工艺延展性显着高于传统铸造成模具的钢。