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 ›› 2015, Vol. 36 ›› Issue (6): 39-41.

• 组织和性能 • 上一篇    下一篇

锻造和预备热处理对超高强度钢23Co-Ni晶粒度的影响

王瑞,龚伟,姜周华,薛向欣   

  1. 东北大学材料与冶金学院,沈阳110819
  • 收稿日期:2015-06-02 出版日期:2015-12-01 发布日期:2022-08-15
  • 作者简介:王瑞(1968-),女,博士研究生(东北大学),教授级高级工程师,1990年东北工学院(本科)毕业,超高强度钢研究。
  • 基金资助:
    国家自然科学基金项目资助(51174050)

Effect of Forging and Conditioning Heat Treatment on Grain Size of Super-High Strength Steel 23Co-Ni

Wang Rui , Gong Wei, Jiang Zhouhua , Xue Xiangxin   

  1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004
  • Received:2015-06-02 Published:2015-12-01 Online:2022-08-15

摘要: 实验钢(/%:0.24C,0.01Mn,0.06Si,0.001S,0.002P,13.42Co,11.32Ni,3.05Cr,1.18Mo,0.015Al,0.015Ti)为6 t真空感应炉+真空自耗熔炼的Φ600 mm锭经3次镦拔锻制的Φ300 mm钢棒,并经650℃ 20 h退火处理(晶粒度6.0级)。实验研究了Φ300 mm钢棒至Φ250 mm钢棒(变形30%)的锻制温度(900~1 200℃)和预备热处理(860℃和900℃正火)对钢的晶粒度的影响。结果表明,锻造温度1 000~1 140℃,变形量30%时可获得细小的完全再结晶晶粒(7.0级)。900℃正火处理该钢可获得均匀细小的晶粒(7.0级)。

关键词: 超高强度钢23Co-Ni, 锻造, 温度, 变形量, 预备热处理, 晶粒度

Abstract: The test steel (/% : 0.24C, 0. 01 Mn, 0. 06Si, 0. 001S, 0.002P, 13.42Co, 11.32Ni, 3.05Cr, 1. 18Mo, 0. 015Al, 0. 015Ti) Φ300 mm bar is forged with 3 times upsetting and forging-out from Φ600 mm ingot melted by 6t vacuum induction furnace + vacuum arc remelting process and annealed at 650 ℃ for 20 h (grains rating 6. 0). The effect of temperature (900 ~ 1 200 ℃ ) forging the Φ300 mm bar to Φ250 mm bar (deformation 30% ) and conditioning heat treatment (normalizing at 860 °C and 900 °C) on grain size of steel has been tested and studied. Results show that with forging at 1 000 ~ 1 140 °C and deforming 30% , the steel has fine and complete recrystallization grains (rating 7. 0). With normalizing at 900 °C the steel has homogeneous and fine grains (rating 7. 0).