红土镍钢等温锌热处理的力学强度和组织优化

Satrio Herbirowo, Setyo Hartadi, R. Widodo, B. Adjiantoro
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引用次数: 1

摘要

目前各研究机构正在讨论红土钢的开发。它不脱离红土基钢进入国家钢铁的潜力。本研究采用等温回火热处理工艺,保温时间分别为30、60、90分钟,以纯度为90%的锌(锌)元素熔锭为冷却介质。红土钢的表征是通过硬度测试、抗冲击性、微观结构、扫描电子显微镜和能量色散光谱来完成的。结果表明:合金的抗冲击性值从209 J降低到191.3 J,降低了8.46%;硬度值从164 HV提高到224 HV,提高了36.58%;从其物理性能来看,保温90分钟后的显微组织为贝氏体、铁素体、珍珠岩,由于存在凹窝孔,断口颜色较深且不透明,因此属于韧性断口
本文章由计算机程序翻译,如有差异,请以英文原文为准。
OPTIMIZATION OF MECHANICAL STRENGTH AND MICROSTRUCTURE ON AUSTEMPERING ZINC HEAT TREATMENT IN LATERITIC NICKEL STEELS
The development of lateritic steel is currently being discussed by various research institutions. It is not separated from the potential of laterite-based steel into national steel. This research using austempering heat treatment process with holding time variation for 30, 60, and 90 minutes with Zn (Zinc) element from melting ingot with 90% purity for cooling media. The characterization of laterite steel is done by hardness testing, impact resistance, microstructure, scanning electron microscopy, and energy dispersive spectroscopy. The results showed that the impact resistance value decreased 8.46%, which was initially 209 J to 191.3 J. Besides, the hardness value increased 36, 58% of which was originally 164 HV to 224 HV. Judging from its physical properties, the microstructure formed bainite ferrite perlite at holding time 90 minutes while the fracture is included into the ductile fracture because there are dimple holes showed dark and opaque
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