杨硕,王本志,张军威,等.钛合金铸件基体火焰烧伤对荧光渗透检测的影响[J].精密成形工程,2018,10(3):82-86.
YANG Shuo,WANG Ben-zhi,ZHANG Jun-wei,et al.Effects of Flame Burn of Titanium Alloy Castings on Fluorescent Penetrant Inspection[J].Journal of Netshape Forming Engineering,2018,10(3):82-86. |
| 钛合金铸件基体火焰烧伤对荧光渗透检测的影响 |
| Effects of Flame Burn of Titanium Alloy Castings on Fluorescent Penetrant Inspection |
| 投稿时间：2018-04-19 修订日期：2018-05-10 |
| DOI：10.3969/j.issn.1674-6457.2018.03.015 |
| 中文关键词: 钛合金铸件 荧光渗透检测 火焰切割 富氧α层 |
| 英文关键词: titanium alloy casting FPI flame cutting oxygen-enriched alpha layer |
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| 中文摘要: |
| 目的 为钛合金铸件生产过程后续相应工艺改进提供技术支持。方法 分析浇冒口附近反复出现裂纹的原因，对ZTC4和ZTA15两种合金产品进行生产跟踪、工艺试验安排以及切片金相微观组织分析。结果 火焰切割浇冒口后铸件表面出现荧光微裂纹，且目视可见，后期热等静压(HIP)工序铸件表面裂纹依然存在，而且并没有衍生新的裂纹。焊接处理，表面裂纹扩大化，并且呈环形分布。得出铸件基体裂纹产生原因：火焰切割浇冒口使铸件基体烧伤产生裂纹，烧伤部位表面产生富氧α层，导致零件焊接性能差，产生表面开裂。结论 后期通过对产生烧伤裂纹铸件，保证将富氧α层完全去除方式，提高焊接质量，使铸件表面质量满足要求。 |
| 英文摘要: |
| This paper aims to provide technical support for subsequent corresponding process improvement in production of titanium alloy castings. The causes of repeat cracks near casting head were analyzed. Production tracking, process test arrangement and metallographic microstructure analysis were carried on alloy product ZTC4 and ZTA15. The results show that fluorescent micro crack appeared on the surface of the casting after flame cutting and the surface crack still existed in the later HIP process; and no new crack was derived. The surface crack was enlarged and distributed in a ring shape after welding treatment. The crack of casting matrix was caused by flame cutting riser, and oxygen-enriched alpha layer was produced on the surface of the burned part, which lead to poor welding performance and surface crack. In the later stage, the oxygen-enriched alpha layer can be removed by burning crack of the casting, to improve the welding quality and make the surface quality of casting meet requirement. |
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