Theoretical investigation on transformation kinetics model and parameter optimization

摘要：

Based on an extended Kolmogorov-Johnson-Mehl-Avrami analytical phase transformation kinetics model, new recipes and an iterative approach were proposed to determine non-isothermal kinetic parameters including anisotropic impingement parameter ζ, growth exponent n, activation energy of nucleation Qn , activation energy of growth QG , temperature independent nucleation rate N0 and number of pre-existing nuclei per unit volume N* etc. Numerical examination approves the validity of the new approach by its better accuracy.

关键词： phase transitions kinetics parameter constant heating rate

作者: Yunlu ZHANG Jianfeng GU

作者单位: Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China

会议类型: 国际会议

会议名称: International Federation for Heat Treatment and Surface Engineering Congress 2012 第20届国际热处理及表面工程联合会 20th IFHTSE

会议地点: 北京

会议语种:英文

页码: 826-832

在线出版日期: 2012-10-23（万方平台首次上网日期，不代表论文的发表时间）