论文部分内容阅读
利用快速凝固技术制备的非晶态合金在某些情况下可表现出淬态脆性,给带村的进一步加工造成困难。本文介绍了国内外有关这一问题的研究进展,尤其是从工艺上改善非晶带材韧性的成果。非晶态合金的淬态脆性有多方面原因:一方面,合金元素、玻璃化元素以及杂质的种类、含量和存在形式等均影响带材的玻璃形成能力和微观结构(短程序),从而影响脆性。另一方面,冷却速率不足会使得合金在制备过程中即发生结构弛豫,是导致淬态脆性的最主要工艺因素,因此工艺参数如冷却辊的冷却能力、带材剥离温度、带材尺寸和表面质量等对淬态脆性有显著影响,此外母合金熔液的处理方式也在一定程度上影响淬态脆性。
Amorphous alloys prepared by rapid solidification techniques may exhibit quench brittleness in some cases, causing difficulties in further processing of the belt. This article introduces the research progress on this issue at home and abroad, especially the result of improving the toughness of amorphous strip from the process. Quenching embrittlement of amorphous alloys for many reasons: on the one hand, alloying elements, vitrified elements and impurities in the type, content and presence of forms and so affect the strip glass forming ability and microstructure (short procedure), thus affecting brittleness. On the other hand, insufficient cooling rate causes the structure to relax during the preparation process, which is the most important process factor leading to the brittleness of the quenched state. Therefore, the process parameters such as the cooling ability of the cooling roll, the strip peeling temperature, the strip size and Surface quality has a significant impact on the brittleness of the quenched state. In addition, the treatment of the mother alloy melt also affects the brittleness of the quenched state to a certain extent.