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: In order to increase the modifying effect, the Cu-P master alloy was rapidly solidified with melt-spin method, and the nano-sized ribbon was gained at 105-106 ℃/s. Subsequently, ZL109 alloy...: the tensile-strength is increased by 25%, the elongation is increased by 32.26% and the hardness is increased by 17.2%. Therefore, the melt-spin treatment is a feasible method to improve the modifying......
Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响 杨立军1,刘双进2,孙继兵2,董天顺2,崔春翔2 (1.天津大学,天津,300072;2.河北工业大学,天津,300130) 摘要:研究了Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响.TEM分析表明:在冷却速度为105~106℃/s时,Cu-P中间合金薄带的组织由纳米晶和少量的非晶组织组成,而且Cu-P中间合金中的Cu3P的晶粒尺寸由5~40 μm下降到30~50 nm.结果表明,由于强度和硬度的提高,用薄带状中间合金改性处理的Al-Si合金的耐磨性要高于用块状中间合金改性处理的Al-Si合金:磨损率由0.86%下降到0.39%.因此,用熔体快淬Cu-P中间合金进行改性处理是提高Al-Si合金的耐磨性的有效办法. 关键词:熔体快淬; 快速凝固; 耐磨性; 改性; melt-spin; rapid......
快淬Nd-Fe-Co-Zr-B合金磁性研究 林崇业1,崔贵根1,姚国兰2,徐孝荣2,傅庆科1 (1.山东临淄牛山稀土永磁材料厂,;2.中科院金属研究所,) 摘要:研究了Nd-Fe-Co-Zr-B合金快淬磁粉的成分,工艺,微结构对磁性的影响,选定合适的成分和工艺,批量生产的磁粉性能可达到(BH)max=94.4kJ/m3(11.8MGOe).用两种快淬工艺(电弧法和感应法)制取磁粉的结果表明,电弧加热熔化溢流或拽出快淬(melt-spin)工艺难以获得均匀一致的快淬微结构组织. 关键词:Nd-Fe-Co-Zr-B合金; 工艺; 微结构; 磁性能; [全文内容正在添加中] ......
300 mm,厚度为30 μm的薄带[9]. 图5 熔体旋铸和平面流快速凝固技术示意图[9] Fig.5 Schematic view of melt-spin process(a) and planar flow cast process(b) 大量的研究工作表明,采用熔体旋铸技术或平面流技术可以开发许多新型快速凝固镁合金.如新型的"简单"的Mg-Zn金属玻璃和具有... techniques, such as gas-blast sputtering, chill-block melt-spinning and laser surface melting, were described. The structures and properties of different alloys produced via such three methods were given......
and aluminium alloys using melt-spin solder foils [C]//Proceedings of the 5th International Brazing and Soldering Conference. Las Vegas, U.S.: ASM International, 2012: 389-393. [8] FLOREA R, BAMMANN D...]. Transactions of Nonferrous Metals Society of China, 2017, 27(4): 962-970. [11] ATAMANENKO T, ESKIN D, ZHANG L, KATGERMAN L. Criteria of grain refinement induced by ultrasonic melt treatment of aluminum......