1. There have no two-phases area in diffusion area, every layer is single-phases 2. Phase's interface moves according to parabola law 3. Phase's width

36. 5 concentration dependence of D. Matano method d -C- dependence ll Matano method

1. Classification y Ideal or perfect crystal real or defect crystal According to dimension o point defect: vacancies, interstitial atoms s line defect dislocation planar defect: stacking fault o volume defect mosaic structure

1. The cause of rotation: Due to constraints, or boundary conditions imposed on the crystal. ll. The rule of rotation:

I Introduction Silicates are compounds that mainly composed of [sio4]. It is the essential components of most rock and soil, such as quartz, feldspar, mica etc

1. The structure of am b differs from those of either a or B 2. Its composition is variable to more or lessextension 3. Mixed bonding 4. Intermediate properties

第6章钢结构的正常使用极限状态 第7章钢结构的连接和节点构造(1)

教学目的、要求(分掌握、理解、了解三个层次): 掌握对接焊缝的构造和计算 掌握角焊缝连接的特性和计算

3.2扭转试验 3.2.1应力应变分析

6.1前言 1、广义的“切口 切口的存在造成:应力应变集中和多向性。 二战事故分析的结论: