ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2011, Vol. 32 ›› Issue (5): 63-65.

• 组织和性能 • 上一篇    下一篇

SPHC钢薄板坯的高温力学性能

果晶晶1,陈健2,王书桓3   

  1. 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;
  • 收稿日期:2011-03-28 出版日期:2011-10-01 发布日期:2022-11-04
  • 作者简介:果晶晶(1985-),女,硕士,河北理工大学毕业,凝固理论与钢的质量控制研究。

Mechanical Properties of Thin Slab of Steel SPHC at High Temperature

Guo Jingjing1 , Chen Jian2 , Wang Shuhuan3   

  1. 1. Department of Resource and Environment Engineering, Xingtai Professional Polytechnic College, Xingtai 054035 ;
    2. Xingtai Machinery and Mill Roll Co Ltd、Sinosteel Group, Xingtai 054025 ;
    3. School of Metallurgy and Energy Resource, Hebei United University, Tangshan 063009;
  • Received:2011-03-28 Published:2011-10-01 Online:2022-11-04

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。

关键词: SPHC钢, 薄板坯, 高温力学性能

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.

Key words: Steel SPHC, Thin Slab, Mechanical Properties at High Temperature