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 ›› 2020, Vol. 41 ›› Issue (3): 64-66.

• 组织和性能 • 上一篇    下一篇

碳、铬和钼对冷微钢铸坯高温力学性能的影响

段路昭1,2,崔娟1,2, 赵俊岭1   

  1. 1邢台钢铁有限责任公司,邢台054027;
    2河北省线材工程技术研究中心,邢台054027
  • 收稿日期:2019-12-13 出版日期:2020-06-01 发布日期:2022-04-25
  • 作者简介:段路昭(1986-),男,硕士(2013年北京科技大学),工程师, 2010年燕山大学(本科)毕业,高级线材产品的开发与研究。

Effect of Carbon, Chromium and Molybdenum on Mechanical Properties of Casting Bloom of Cold Heading Steel at Elevated Temperature

Duan Luzhao1,2, Cui Juan1,2 ,Zhao Junling1   

  1. 1 Xingtai IRON STEEL Co Ltd, Xingtai 054027 ;
    2 Hebei Engineering Research Center for Wire Rod, Xingtai 054027
  • Received:2019-12-13 Published:2020-06-01 Online:2022-04-25

摘要: 通过GLEEBLE-3500热模拟机,研究了六种不同碳、铬和钼含量对冷镦钢(/%:0.19C,0.36C,0.19C-0.96Cr,0.39C-0.98Cr,0.19C-0.91Cr-0.21Mo和0.37C-0.98Cr-0.22Mo)在650~1200℃温度内的高温力学性能的影响。结果表明,六种钢在650~850℃温度都存在明显的第Ⅲ脆性区。第Ⅲ脆性区的起始温度随着碳含量减少和铬含量的添加移向更高温度。铬的添加使得材料的高温塑性恶化,促进第Ⅲ脆性区扩大。而钼的添加可改善含铬冷镦钢的第Ⅲ脆性区塑性。

关键词: C , Cr , Mo, 冷镦钢, 高温力学性能

Abstract: The effect of different carbon, chromium and molybdenum contents on mechanical properties of six kinds of cold heading steels (/% :0.19C,0.36C,0.19C-0.96Cr,0.39C-0.98Cr,0.19C-0.91Cr-0.21Mo and 0.37C-0.98Cr- 0.22Mo) at 650 ~ 1200℃had been studied by using GLEEBLE-3500 thermal simulation machine. Results reveal that: the third brittle region of all of the steels is obvious in the temperature range 650 ~ 850 ℃.The starting temperature of the third brittle region moves to higher temperature with the carbon content decreasing or chromium element adding. Addition of chromium deteriorates the ductility and promotes the third brittle region expanding. Addition of molybdenum in the chromium alloyed cold heading steels improves the ductility of the third brittle region.