Development of 600 MPa Low Silicon and Nb-Ti Microalloying High Quality 3.5 mm Hot-Rolled Dual Phase Steel Plate

殷胜; 蔡晓辉; 朱红丹

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Development of 600 MPa Low Silicon and Nb-Ti Microalloying High Quality 3.5 mm Hot-Rolled Dual Phase Steel Plate

更新时间：2026-01-21

- Development of 600 MPa Low Silicon and Nb-Ti Microalloying High Quality 3.5 mm Hot-Rolled Dual Phase Steel Plate
- Special Steel Vol. 35, Issue 5, Pages: 47-49(2014)
- 作者机构：
  
  1. 宝钢梅山钢铁股份有限公司技术中心,南京,210039
  2. 东北大学连轧自动化国家重点实验室,沈阳,110819
  3. 宝钢梅山钢铁股份有限公司检测中心,南京,210039
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：16 April 2014，
  
  Online First：01 September 2022，
  
  Published：01 September 2014
- 稿件说明：
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殷胜, 蔡晓辉, 朱红丹. Development of 600 MPa Low Silicon and Nb-Ti Microalloying High Quality 3.5 mm Hot-Rolled Dual Phase Steel Plate[J]. Special Steel, 2014, 35(5): 47-49.
DOI：

殷胜, 蔡晓辉, 朱红丹. Development of 600 MPa Low Silicon and Nb-Ti Microalloying High Quality 3.5 mm Hot-Rolled Dual Phase Steel Plate[J]. Special Steel, 2014, 35(5): 47-49. DOI：

摘要

通过真空感应炉熔炼和浇铸的50 kg锭锻成40 mm×150 mm坯和热轧成10 mm板以及热模拟试验研究了开发的低硅Nb-Ti微合金化双相钢(/%:0.082C，0.15Si，1.20Mn，0.010P，0.002S，0.020Nb，0.015Ti，0.045Al，0.0035N)静态和动态连续冷却转变(CCT)曲线、组织(11%马氏体+89%铁素体)和力学性能(抗拉强度682 MPa)。并通过铁水脱硫-260 t BOF-LF-RH-230 mm×1300 mm连铸-热轧工艺试制了低硅双相钢(/%:0.075C，0.15Si，1.16Mn，0.012P，0.003S，0.016Nb，0.015Ti，0.033Al，0.0043N)3.5mm板。结果表明，精轧出口温度810℃，水冷至700℃，空冷4.5 s，卷取温度150℃时，该钢的组织为15%马氏体+85%铁素体

晶粒度12~12.5级，抗拉强度672~692 MPa，伸长率24.0%~28.5%，屈强比0.65~0.67，钢板冲压成塑性能优良，制造的轿车轮辐弯曲疲劳性能15×10

次。

Abstract

The static and dynamic continuous cooling transformation (CCT) curves

structure (11% martensite + 89% feiTite) and mechanical properties (tensile strength 682 MPa) of developed low silicon and Nb-Ti Microalloying dual phase steel (/% : 0.082C

0.15Si

1.20Mn

0.010P

0.002S

0.020Nb

0.015Ti

0.045Al

0.0035N) have been tested and studied by melting in a vacuum induction furnace

casting 50 kg ingot

forging to 40 mm x 150 mm slab and hot rolling to 10 mm plate and thermal simulation testing. And 3.5 mm low silicon dual phase steel plate (/% : 0.075C

0.15Si

1.16Mn

0.012P

0.003S

0.016Nb

0.015Ti

0.033Al

0.0043N) has been pilot-produced by hot

metal desulphurization-260 t BOF-LF-RH-230 mm x 1300 mm slab concasting-hot rolling process. Results show that with finished rolling 810 °C

water cooling to 700 ℃

air cooling for 4.5 s and coiling at 150 °C

the structure of steel is 15% +85% ferrite with gain size rating 12-12.5

the tensile strength of steel is 672-692 MPa with yield-ultimate strength ratio 0. 65 ~0. 67

and the yield of steel is 24.0%-28.5% . The steel plate has nice stamping performance and the bending fatigue life of manufactured wheel rib of car is 15 x 10

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