| 1. | Spray deposited porous aluminum alloy sheets easily have surface and edge crack when they are directly rolled due to the porosity and metallurgical bond 摘要喷射沉积多孔铝合金板坯由于有孔洞且缺乏良好的冶金结合,直接轧制时易出现板坯表面裂纹及边裂。 |
| 2. | So the effecte of frame - pack rolling technology on microstructure and mechanical proprties of spray deposited porous 5a06 and 8009 aluminum alloy sheets after rolling were studied 为此研究了外框限制轧制工艺对喷射沉积多孔材料5a06和8009铝合金板坯轧制组织和力学性能的影响。 |
| 3. | Liu yc , lu yl , yang gc , zhu zg . influence of cerium content on damping capacities of as - spray deposited high silicon alloy za27 , transactions of nfsoc 7 ( 1997 ) 111 - 115 杨留栓,刘永长,庞礼军,杨根仓,周尧和.喷雾沉积高硅za27合金的摩擦磨损性能,材料研究学报, 10 ( 1996 ) 363 - 367 |
| 4. | Liu yc , yang gc , lu yl , zhu zg . influence of extrusion on damping capacities of as - spray deposited high silicon alloy za27 modified by cerium , acta metallurgica sinica 10 ( 1997 ) 437 - 444 刘永长,杨根仓,吕衣礼.喷雾共沉积法制备高性能金属基复合材料的新思路,材料导报, 5 ( 1996 ) 65 - 67 |
| 5. | In this paper , the fundamental of spray deposition technique is described , the properties and research situation of spray deposited magnesium alloys are reviewed , and the development prospect for magnesium alloys with perfect properties is discussed 叙述了喷射沉积快速凝固技术的原理,综述了喷射沉积镁合金的特点和研究现状,并对其发展前景进行了展望。 |
| 6. | The results show that " the frame - pack rolling " technology can increase the densify , avoid cracking during rolling , and effectively improve the deformability and mechanical properties of the spray deposited porous aluminum alloy sheets 结果表明:外框限制轧制工艺提高了喷射沉积多孔材料的致密度,避免了轧制过程中裂纹的形成,有效地改善了喷射沉积板坯的轧制性能及材料的力学性能。 |
| 7. | However , the spray deposited preforms usually contain more than 10vol . % porosity that is a great disadvantage for the mechanical properties . in order to prepare full density products of high mechanical performance , the porous preforms must suffer densification process 然而喷射沉积材料通常存在一定量的孔隙,颗粒表面存在一定厚度的氧化膜,颗粒之间未能完全达到良好的冶金结合状态,因此需要进行后续致密化才能获得理想的组织和性能。 |
| 8. | But the alloys fabricated by normal ingot metallurgy worsen the mechanical properties due to the coarse block - like or plate - like angular primary si particles . multi - layer spray deposit ( mlsd ) technology is a kind of rapid solidification with high cooling velocity up to 1 04 - 1 06k / sec , which can improve the microstructure , lessen segregation and increase the solid - solution of the alloy 利用多层喷射沉积技术的高冷速(可达10 ~ 4k / s ) ,可显著改善al - si合金的显微组织、减少偏析、提高合金固溶度等,使合金性能得以大幅度提高,扩大其应用范围。 |