Scholarlink

<p>Most research on Q&amp;P heat treatments is limited to suppressed carbide precipitation models. This study investigates the carbon partitioning and carbide precipitation of Q&amp;P stainless steel containing 12% chromium. According to the investigation conducted using field emission scanning electron microscopy (FESEM), precipitation of iron carbide was observed in the specimens partitioned at 450 °C. Analysis via X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) confirmed that carbide precipitation occurred in the microstructure as partitioning temperature increased from 370 to 450 °C. The difference in hardness between samples partitioned at 370 and 450 °C was due to carbide precipitation during the partitioning of the sample at 450 °C and a more stable retained austenite (RA) at 370 °C. The RA percentage and austenite lattice parameter decreased as the partitioning temperature rose from 370 to 450 °C due to carbide precipitation, resulting in a reduction in carbon sources.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Carbon Partitioning and Carbide Precipitation During Quenching and Partitioning Process of 12%Cr Martensitic Stainless Steel

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • Ahmad Nazari,
  • Behrooz Ghasemi

摘要

Most research on Q&P heat treatments is limited to suppressed carbide precipitation models. This study investigates the carbon partitioning and carbide precipitation of Q&P stainless steel containing 12% chromium. According to the investigation conducted using field emission scanning electron microscopy (FESEM), precipitation of iron carbide was observed in the specimens partitioned at 450 °C. Analysis via X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) confirmed that carbide precipitation occurred in the microstructure as partitioning temperature increased from 370 to 450 °C. The difference in hardness between samples partitioned at 370 and 450 °C was due to carbide precipitation during the partitioning of the sample at 450 °C and a more stable retained austenite (RA) at 370 °C. The RA percentage and austenite lattice parameter decreased as the partitioning temperature rose from 370 to 450 °C due to carbide precipitation, resulting in a reduction in carbon sources.