８０９０Ａｌ—Ｌｉ合金焊缝凝固组织中除了柱状枝晶和等轴枝晶外，还有一种极细小的等轴非枝晶，它主要分布在熔合区边缘，有时也能呈带状出现在焊缝中部．等轴枝晶与柱状枝晶的结晶核心是平衡态四方Ａｌ_３Ｚｒ粒子，而等轴非枝晶的结晶核心是亚稳态立方Ａｌ_３Ｚｒ粒子．
A kind of very fine equiaxed non- dendrite, besides the equiaxed dendrites and the columnar dendrites, exists in the 8090 aluminum-lithium alloy welds. The equiaxed non-dendrites are mainly distributed at the edge of the fusion zone; occasionally they can appear in the intermediate section of weld in the form of banding. The nuclei of equiaxed dendrites and columnar dendrites are the equilibrium tetragonal Al_3Zr particles, while the nuclei of equiaxed non -dendrite are demonstrated to be metastable cubic Al_3Zr particles.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | HeYunjia,GaoDalu,SunZhixiong,Luwu．In:PeterM,WinklerPJeds．,Proc6thIntConfonAluminum-LithiumAlloy,Garmisch-partenKirchenFRG:DGMInformationsgesellschaftmbH,1992:12152于尔靖,郝传勇,应慧筠,马景霞,李敢红．焊接学报,1996 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%