Effect of Hot Deformation on Structure and Mechanical properties of Quenched and Partitioned Low Carbon CrNi3Si2MoV Steel

付勇涛; 刘静; 王存宇; 张玉杰; 贾国翔; 时捷; 董瀚

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Effect of Hot Deformation on Structure and Mechanical properties of Quenched and Partitioned Low Carbon CrNi3Si2MoV Steel

更新时间：2026-01-21

- Effect of Hot Deformation on Structure and Mechanical properties of Quenched and Partitioned Low Carbon CrNi3Si2MoV Steel
- Special Steel Vol. 35, Issue 4, Pages: 55-58(2014)
- 作者机构：
  
  1. 武汉科技大学材料与冶金学院,武汉,430080
  2. 武汉钢铁集团公司技术研究院,武汉,430083
  3. 钢铁研究总院特殊钢研究所,北京,100081
  4. 西安建筑科技大学冶金工程学院,西安,710055
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：03 March 2014，
  
  Online First：03 September 2022，
  
  Published：03 September 2014
- 稿件说明：
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付勇涛, 刘静, 王存宇, et al. Effect of Hot Deformation on Structure and Mechanical properties of Quenched and Partitioned Low Carbon CrNi3Si2MoV Steel[J]. Special Steel, 2014, 35(4): 55-58.
DOI：

付勇涛, 刘静, 王存宇, et al. Effect of Hot Deformation on Structure and Mechanical properties of Quenched and Partitioned Low Carbon CrNi3Si2MoV Steel[J]. Special Steel, 2014, 35(4): 55-58. DOI：

摘要

试验用CrNi3Si2MoV钢(/%:0.21C

1.75Si

0.29Mn

0.0060P

0.0007S

1.03Cr

2.86Ni

0.31Mo

0.08V)由50 kg真空感应炉冶炼

并锻成φ15 mm的钢棒。通过Gleeble-3800热模拟试验机、扫描、透射电镜(SEM、TEM)和X-射线衍射仪(XRD)等研究了1 200℃奥氏体化的CrNi3Si2MoV钢在750℃ 10%~70%热变形+淬火至330℃和550℃1 min的淬火分配(Q&P

Qnenching and Partitioning)处理后

热变形量对Q&P处理试验钢组织和硬度的影响。试验结果表明

热变形+Q&P处理后CrNi3Si2MoV钢的组织为板条奥氏体+5.7%~17.2%薄膜状残留奥氏体;变形量为30%时残留奥氏体量最大(17.2%)

50%变形时HV值最大为448

当变形量达70%时该钢发生明显的再结晶

组织细化

钢的硬度降低。

Abstract

Test steel CrNi3Si2MoV (/% ： 0.21C

1.75Si 0.29Mn

0.006 0P

0.0007S

1.03Cr

2.86Ni

0.31 Mo

0.08V) is melted by a 50 kg vacuum induction furnace and forged to φ15 mm bar product. The effect of hot deformation on structure and hardness of test steel CrNi3Si2MoV austenitized at 1 200 ℃

then hot deforming with 10% 〜 70% at 750 °C + quenching and partitioning (Q&P) treated by quenching to 330 °C and 550 ℃ for 1 min is studied by Gleeble-3800 thermal simulation machine

scanning and transmission electron microscope (SEM and TEM)

and X-ray diffractometer (XRD). Test results show that the structure of hot deformation + Q&P treated steel CrNi3Si2MoV is lath martensite + 5. 7% ~ 17.2% lamella residual austenite

with 30% hot deformation the residual austenite amount (17. 2%) in steel is maximum

with 50% hot deformation the hardness HV value of steel is maximum up to 448

and as hot deformation up to 70%

the obvious recrystallization of steel occurs with fine structure and the hardness of steel decreases.

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