超塑性TC4钛合金板晶粒的金相显示方法  

Metallurgical Displaying Methods of Grain of Superplastic TC4 Titanium Alloy Plates

作　　者：马红征 杨军红 党鹏 邢秋丽 何伟 

机构地区：[1]西部材料股份有限公司,西安710016

出　　处：《理化检验（物理分册）》2016年第2期104-107,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：超塑性TC4钛合金板中的α相晶粒,在尺寸比较细小时,采用常规的侵蚀剂不能有效显示其晶界。试验结果表明:分别采用阳极氧化镀膜法和化学沉积法,在TC4钛合金板金相试样抛光表面沉积一层透光薄膜,透过薄膜上光的干涉效应产生的组织间衬度可以真实、完整、清晰地显示α相晶粒形貌。并运用此方法得到了满足超塑性要求的TC4钛合金板晶粒尺寸金相图谱。When theα-grain size of surperplastic TC4 titanium alloy plates is too small,the grain boundries would not be displayed effectively by the common etching reagents.The experimental results show that a layer of transparent film could be deposited on the polished surface of TC4 titanium alloy metallographic samples by anodic oxidation coating method or chemical deposition method,and the interference effect of light through the film could display theα-grain morphology vividly,completely and clearly.By these two methods,the metallograph of grain size of TC4 titanium alloy plates which met the superplastic forming requirements was obtained.

关 键 词：超塑性 TC4钛合金 α相晶粒 阳极氧化镀膜 化学沉积 晶粒尺寸 金相图谱 

分 类 号：TG146.23[一般工业技术—材料科学与工程]