SUN Dongsheng LI Fengzhao Shandong Polytechnic University
,
Jinan
,
Laboratory of Atomic Imaging of Solids
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Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
ChinaDAI Jiyan LI Douxing Laboratory of Atomic Imaging of Solids
,
Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
China associate professor
,
Institute of Materials Engineering
,
Shandong Polytechnic University
,
Jinan 250014
,
China
金属学报(英文版)
Observation under high resolution electron microscope shows that the continuous bombing of high speed ions produces a great amount of vacant site defects.The assembly of vacancies forms vacant dish,and the collapase of vacant dish forms stacking fault tetrahedrons and oth- er crystal defects.The interfaces between phase ε(Fe_(2-3)N)and phase γ'(Fe_4N)are smooth, straight and coherent,and they have the orientation relationships of(11)//(0001)and [110]/[110] .
关键词:
crystal defect
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null
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null
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null
张斌
,
张鸿冰
金属学报
通过对奥氏体再结晶行为的研究得到35CrMo钢发生动态再结晶的形变条件为：形变温度T>1000℃, 应变速率1/s。描述动态再结晶动力学方程f=1-exp(-b(Z)tn(Z))中的系数b和n与变形参数Z有关。计算值与实测值较为吻合。通过非线性回归得到35CrMo钢的动态再结晶晶粒尺寸的关系式为：DDRX=2.25104Z-0.22。通过双道次压缩和单道次压缩保温实验，得出35CrMo钢静态再结晶激活能和动力学方程。
关键词:
动力学方程
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kinetic equation
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grain size
