β Grain Growth Kinetics of hot-rolled TB-13 alloy

摘要：

A study on the kinetics of β grain growth of a fine-grained, hot-rolled TB-13 alloy was carried out by isochronal and isothermal solution treatments. The grain size of the as-rolled and as-solution-treated samples was determined by metallographic observation using the linear intercept method. The kinetic equations and the Arrhenius-type equation were applied to calculate the β grain growth exponent and the activation energy for β grain growth at special temperatures. The results showed that the β grain growth rate decreased with elongating solution treated time, but increased with increasing solution treated temperature. The β grain growth exponents (n) were 0.394, 0.403 and 0.406 during the solution treated temperatures at 1103K, 1153K and 1203K, respectively. The values of n increased with increasing solution treated temperature and the determined activation energy (Qm) for β grain growth after holding for 0.5h at 1103K-1203K was around 156KJ/mol.

关键词： TB-13 alloy solution treated temperature solution treated time grain growth exponent grain growth activation

作者: Yue Fei Bin Tang Hui Chang Zhishou Zhu Zhongbo Zhou Guoqiang Shang Jinshan Li Lian Zhou

作者单位: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,Xi’an710072 Beijing Institute of Aeronautical Materials, Beijing 100095, China State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an71007

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 472-478

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）