Evolution and Formation of Ti-bearing Inclusions in AISI 321 Stainless Steel in 50 t EAF-AOD-LF-10 t Ingot Casting Flow Sheet

陈瑞梅; 白雪峰; 孙彦辉; 张一民; 卓超; 金吉男; 付少朋; 朱雪珍

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Evolution and Formation of Ti-bearing Inclusions in AISI 321 Stainless Steel in 50 t EAF-AOD-LF-10 t Ingot Casting Flow Sheet

更新时间：2026-01-21

- Evolution and Formation of Ti-bearing Inclusions in AISI 321 Stainless Steel in 50 t EAF-AOD-LF-10 t Ingot Casting Flow Sheet
- Special Steel Vol. 40, Issue 4, Pages: 7-11(2019)
- 作者机构：
  
  1. 钢铁共性技术协同创新中心，北京科技大学,北京,100083
  2. 浙江青山钢铁有限公司,丽水,323903
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 February 2019，
  
  Online First：14 May 2022，
  
  Published：14 May 2019
- 稿件说明：
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陈瑞梅, 白雪峰, 孙彦辉, et al. Evolution and Formation of Ti-bearing Inclusions in AISI 321 Stainless Steel in 50 t EAF-AOD-LF-10 t Ingot Casting Flow Sheet[J]. Special Steel, 2019, 40(4): 7-11.
DOI：

陈瑞梅, 白雪峰, 孙彦辉, et al. Evolution and Formation of Ti-bearing Inclusions in AISI 321 Stainless Steel in 50 t EAF-AOD-LF-10 t Ingot Casting Flow Sheet[J]. Special Steel, 2019, 40(4): 7-11. DOI：

摘要

研究了模铸工艺生产的AISI 321不锈钢含钛夹杂物的演变。工业试验表明

LF喂钛线后

发生钛的氧化行为

随着冶炼过程的进行

在夹杂物平均成分中的比例逐渐升高

TiN主要以均质氮化钛和含芯氮化钛为主

含芯TiN核心成分为MgO及MgO·Al

也有少量的TiO

-MgO-Al

核心。通过热力学软件Factsage计算了钢水中Ti-Al-O、Ti-N稳定相图以及凝固过程TiN的析出行为。

Abstract

Evolutionand formation of Ti-bearing inclusions in AISI 321 stainless steel in ignoring casting process was investigated. The industrial test results show that titanium oxidation occurs after Ti addition in LF process and the proportion of Ti

in the average inclusions compositions increased along with the smelting process. The TiN inclusions observed were pure TiN and TiN with core MgO and MgO·Al

or with minor core TiOx-MgO-Al

. Moreover

the stable diagram of Ti- Al-0 and Ti-N in the liquid steel and precipitation of TiN during solidification were also calculated by thermodynamic software Factsage.

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