Scholarlink

<p>The hereditary evolution of TiC in continuous casting and during subsequent heating and rolling processes directly affects the quality of high-titanium steel slabs and final rolled products. This study investigates high-titanium steel continuous casting slabs and rolled materials produced by an enterprise. Their microstructure and dendrite spacing were analyzed using scanning electron microscopy and optical microscopy. The size and quantity distribution of TiC in samples from different positions were statistically analyzed to elucidate the hereditary relationship between slabs and rolled materials. In laboratory research, the effect of soaking time on the microsegregation of slabs was investigated. An electron probe was used to observe the distribution of carbon and titanium elements between dendrites. In addition, cosine and Gaussian models of microsegregation diffusion were established to systematically study the evolution of TiC in high-titanium steel during continuous casting, heating, and rolling processes. The results show that from the slab surface to the center, the average size of TiC gradually increases, being 4.23, 12.96, and 115.67&#xa0;<i>μ</i>m, respectively. When the soaking temperature is 1200&#xa0;°C and the soaking time exceeds 170&#xa0;minutes, the segregation of titanium and carbon elements between dendrites is improved. However, sporadic micron-sized TiC still exists. By comparing the two diffusion models, it was found that with the increase of soaking temperature, TiC gradually diminishes. The optimal charging process is a charging temperature of 1100&#xa0;°C–1200&#xa0;°C and a soaking time of 110&#xa0;minutes.</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

Study on the Evolution of TiC Inclusions in High-Titanium Steel During the Continuous Casting and Rolling Process

  • 期刊论文

  • 发表日期：

    2025年7月16日

查看全文
  • Min Zhang,
  • Yanhui Sun,
  • Jianhua Zeng,
  • Xie Feng,
  • Tianci Chen

摘要

The hereditary evolution of TiC in continuous casting and during subsequent heating and rolling processes directly affects the quality of high-titanium steel slabs and final rolled products. This study investigates high-titanium steel continuous casting slabs and rolled materials produced by an enterprise. Their microstructure and dendrite spacing were analyzed using scanning electron microscopy and optical microscopy. The size and quantity distribution of TiC in samples from different positions were statistically analyzed to elucidate the hereditary relationship between slabs and rolled materials. In laboratory research, the effect of soaking time on the microsegregation of slabs was investigated. An electron probe was used to observe the distribution of carbon and titanium elements between dendrites. In addition, cosine and Gaussian models of microsegregation diffusion were established to systematically study the evolution of TiC in high-titanium steel during continuous casting, heating, and rolling processes. The results show that from the slab surface to the center, the average size of TiC gradually increases, being 4.23, 12.96, and 115.67 μm, respectively. When the soaking temperature is 1200 °C and the soaking time exceeds 170 minutes, the segregation of titanium and carbon elements between dendrites is improved. However, sporadic micron-sized TiC still exists. By comparing the two diffusion models, it was found that with the increase of soaking temperature, TiC gradually diminishes. The optimal charging process is a charging temperature of 1100 °C–1200 °C and a soaking time of 110 minutes.