Al-Ti-B晶粒细化剂验收指标评价方法

Evaluation Method of Acceptance Index of Al-Ti-B Grain Refiner

利用SEM扫描电镜分别对不同供应商提供的Al-Ti-B丝进行组织检测,并用SEM自带的EDS能谱分析仪测定Al-Ti-B丝中的TiAl_(3)、TiB_(2)、杂质相、盐类氧化夹杂物及其它缺陷等。通过比较TiAl_(3)、TiB_(2)的尺寸及分布,是否存在未溶解固体杂质,盐类氧化夹杂物的总长度,以及组织缺陷如含氢量等指标,从而判定Al-Ti-B丝原辅材料的质量好坏,可作为铝熔铸及加工企业验收Al-Ti-B晶粒细化剂的参考标准。

SEM scanning electron microscopy is used to test the microstructure of Al-Ti-B wires provided by different suppliers,and the EDS energy spectrum analyzer that came with SEM is used to determine TiAl_(3),TiB_(2),impurity phases,salt oxidation and other defects in Al-Ti-B wires.By comparing the size and distribution of TiAl_(3) and TiB_(2),whether there are undissolved solid impurities,the total length of salt oxide inclusions,and structural defects such as hydrogen content and other indicators,to determine the quality of auxiliary materials of Al-Ti-B wires,that can be used as a reference standard for the acceptance of Al-Ti-B grain refiners by aluminum casting and processing enterprises.