西北农林科技大学：《种子学》课程教学资源（教案讲义，打印版）第四章 种子加工原理和技术 第4.4节 种子处理和包衣

《材料加工原理 Principles of Materials Processing》教学资源（课程参考书）《RECRYSTALLIZATION AND RELATED ANNEALING PHENOMENA》（SECOND EDITION）

经济周期的含义与类型； 经济周期的成因； 乘数一加速原因 经济增长及其决定因素； 经济增长的几个典型模型

Major casting processes SINGLE CRYSTAL GROWTH UNIDIRECTIONAL SOLIDIFICATION RAPID SOLIDIFICATION ATOMIZATION OF LIQUID METALS AND ALLOYS

Major casting processes Sand casting Investment casting Lost-foam casting Gravity die casting (permanent mould casting) Low pressure die casting High pressure die casting Centrifugal casting

Introduction Casting practice Design considering in casting Design for expendable-mold casting

Solidification of Peritectics • General considerations of pertitectics • Nucleation of peritectics • Solidification of peritectics Microstructure control through solidification method Solidification Defects The other defects

Solidification of Eutectics • Coupled eutectic growth morphology • Other eutectic morphologies

• Dendrite arm spacing • Formation of equiaxed grains • Cast microstructure

• Solidification microstructure: Cells and dendrites • Constrained growth • Preferred growth direction