Mechanical Properties of Thin Slab of Steel SPHC at High Temperature

果晶晶; 陈健; 王书桓

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Mechanical Properties of Thin Slab of Steel SPHC at High Temperature

更新时间：2026-01-21

- Mechanical Properties of Thin Slab of Steel SPHC at High Temperature
- Special Steel Vol. 32, Issue 5, Pages: 63-65(2011)
- 作者机构：
  
  1. 邢台职业技术学院资源与环境工程系,邢台,054035
  2. 中钢集团邢台机械轧辐有限公司,邢台,054025
  3. 河北联合大学冶金与能源学院,唐山,063009
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 March 2011，
  
  Online First：04 November 2022，
  
  Published：04 November 2011
- 稿件说明：
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果晶晶, 陈健, 王书桓. Mechanical Properties of Thin Slab of Steel SPHC at High Temperature[J]. Special Steel, 2011, 32(5): 63-65.
DOI：

果晶晶, 陈健, 王书桓. Mechanical Properties of Thin Slab of Steel SPHC at High Temperature[J]. Special Steel, 2011, 32(5): 63-65. DOI：

摘要

用Gleeble热模拟试验机对SPHC钢(%:0.02C、0.18Mn、0.03Si、0.04Als)70 mm×1250 mm板坯进行600～1 350℃的力学性能的研究

并借助扫描电子显微镜和能谱仪分析了拉力试样的断口。结果表明

SPHC薄板坯的第Ⅰ和第Ⅲ脆性区分别为1 200℃～固相线及600～850℃

850～1 200℃薄板坯的塑性最好;第Ⅲ脆性区试样为沿晶界断裂;晶界处夹杂物及γ→α相变中形成的片状铁素体造成了晶界脆性

降低了第Ⅲ脆性区材料塑性。

Abstract

The mechanical properties of 70 mm x 1 250 mm slab of steel SPHC (% : 0.02C

0.18Mn

0.03Si

0.04Als) at 600 ~ 1 350 ℃ have been studied by Gleeble thermal simulation machine and the fracture of tensile specimen is analyzed by scanning electron microscope and energy dispersive X-ray spectrometer. Results show that the I brittle zone and the III brittle zone of thin slab of steel SPHC are respectively at 1200 °C ~ solidus and at 600 ~ 850 ℃

the plasticity of thin slab is best at 850 〜1200 °C ； the specimen at temperature in the III brittle zone is fractured along grain boundary ； and the inclusions in grain boundary and lamellar ferrite formed in γ to α phase transfomiation lead to brittleness of grain boundary and decrease of plasticity of material in the III brittle zone.

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