23Co14Ni12Cr3MoE钢奥氏体晶粒长大动力学
Kinetics of Austenite Grain Growth in 23Co14Ni12Cr3MoE Steel
摘 要
利用显微组织观察和理论模型分析的方法, 研究了二次硬化型超高强度23Co14Ni12Cr3MoE钢在800～1 150 ℃之间的奥氏体晶粒长大动力学。结果表明: 该钢奥氏体平均晶粒尺寸随着加热温度的升高和保温时间的延长而增大, 其长大规律符合Beck方程, 奥氏体化温度宜控制在850~950 ℃; 在800～1 150 ℃范围内, 奥氏体晶粒长大指数随加热温度的升高而逐渐增大, 晶粒长大平均激活能为256.62 kJ·mol-1, 并建立了该钢在等温加热过程中的奥氏体晶粒长大动力学方程。
奥氏体
晶粒长大
激活能
ultra-high strength steel
austenite
grain growth
activation energy
Abstract
The kinetics of austenite grain growth in the ultra-high strength steel 23Co14Ni12Cr3MoE, was investigated by microstructure observation and theoretic model analysis at 800-1 150 ℃. The results indicate that the average austenite grain size of the steel increased when the heating temperature increased and the holding time prolonged. And the growth of austenite grain followed the Beck′s equation. The best austenitizing temperature should be controlled in 850-950 ℃. The grain growth exponent increased gradually with the increase of heating temperature, and the average activation energy was 256.62 kJ·mol-1 in the temperature range of 800-1 150 ℃. The equation of austenite grain growth for 23Co14Ni12Cr3MoE steel in isothemal heating process was established.
中图分类号 TG142.25
所属栏目 试验研究
基金项目 王春旭(1971-), 男, 吉林长春人, 高级工程师, 博士。
收稿日期 2013/12/5
修改稿日期 2014/6/15
网络出版日期
作者单位点击查看
引用该论文: WANG Chun-xu,HUANG Shun-zhe,LI Yong,LIU Xian-min,TIAN Zhi-ling. Kinetics of Austenite Grain Growth in 23Co14Ni12Cr3MoE Steel[J]. Materials for mechancial engineering, 2015, 39(4): 39～42
王春旭,黄顺喆,厉勇,刘宪民,田志凌. 23Co14Ni12Cr3MoE钢奥氏体晶粒长大动力学[J]. 机械工程材料, 2015, 39(4): 39～42
被引情况:
【1】杨跃辉, "高铌低碳贝氏体钢奥氏体晶粒的长大行为",机械工程材料 40, 106-110(2016)
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【7】SATO K. Improving the toughness of ultra-high strength steel ［D］.California: University of California,2002.
【8】DAHL J M, NOVOTNY P M. Airframe and landing gear alloy［J］.Advanced Materials and Processes,1999,155(3):23-25.
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【10】李志, 赵振业.AerMet100钢的研究与发展［J］.航空材料学报, 2006, 26(3): 265-270.
【11】AYER R, MACHMEIER P. Transmission Electron Microscopy Examination of Hardening and Toughening Phenomena in AerMet100［J］.Metallurgical Transactions: A,1993,24:1943-1955.
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【13】ANELLI E. Application of mathematical modelling to hot rolling and controlled cooling of wire rods and bars［J］.ISIJ International,1992,32(3):440-449.
【14】黄顺喆, 厉勇, 王春旭, 等.9310钢的奥氏体晶粒长大规律研究［J］.热加工工艺, 2010, 39(18): 31-33.
【15】廉学魁, 厉勇, 刘宪民, 等.二次硬化超高强度钢AF1410奥氏体晶粒长大行为［J］.特殊钢, 2010, 31(5): 61-63.
【16】BECK P A, KREMER J C, DEMER L J, et al. Grain growth in high-purity aluminum-magnesium alloy ［J］.Metall Trans, 1948, 175: 372-394.
【17】岳重祥, 张立文, 廖舒纶, 等.GCr15钢奥氏体晶粒长大规律研究［J］.材料热处理学报, 2008, 29(1): 94-97.
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