Effect of Dissolution and  Precipitation  of Nb-Ti  Carbides on Structure and Properties of Low Carbon Microalloying Steel

李维娟; 康小兵

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Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel

更新时间：2026-01-21

- Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel
- Special Steel Vol. 27, Issue 6, Pages: 4-6(2006)
- 作者机构：
  
  1. 鞍山科技大学,鞍山,114044
  2. 鞍钢热连轧带钢厂,鞍山,114021
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：26 April 2006，
  
  Online First：01 March 2023，
  
  Published：01 March 2006
- 稿件说明：
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李维娟, 康小兵. Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel[J]. Special Steel, 2006, 27(6): 4-6.
DOI：

李维娟, 康小兵. Effect of Dissolution and Precipitation of Nb-Ti Carbides on Structure and Properties of Low Carbon Microalloying Steel[J]. Special Steel, 2006, 27(6): 4-6. DOI：

摘要

采用理论计算方法分析了Nb、Ti碳化物在低C微合金钢(%:0.09C、1.42Mn、0.035Nb、0.012Ti)奥氏体中的溶解与析出

测试了不同加热温度下奥氏体晶粒尺寸以及固溶-时效后实验钢的硬度。结果表明

Nb、Ti碳化物在1060℃全部溶解

800℃时效时

奥氏体中的Nb、Ti基本以NbC、TiC形式析出。700℃时效时

Nb、Ti碳化物在铁素体内析出

随温度降低

碳化物析出减慢。600℃时效

钢的硬度达到最大值。

Abstract

The dissolution and precipitation of Nb-Ti carbides in austenite of a low carbon microalloying steel (0.09C

1.42Mn

0.035Nb

0.012Ti)have been analyzed by theoretical calculation method

and the austenite grain size with different heating temperature and the hardness of steel after solid solution treatment -aging were examined. The results showed that Nb-Ti carbide completely dissolved at 1060 ℃ and almost Nb and Ti in austenite precipitated in the form of NbC and TiC at 800 ℃ aging. At 700 ℃ aging the Nb-Ti carbides precipitated in ferrite

and with decreasing temperature the carbides precipitation decreased. The hardness of steel was up to maximum value as aged at 600 ℃.

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