HR-2合金锻棒心部孔洞形成原因
Cause of hole formation in the core of HR-2 alloy forging rod
摘 要
HR-2合金锻棒靠近心部位置存在尺寸较大的长条形孔洞。采用微观观察、能谱分析及有限元分析等方法对孔洞的产生原因进行分析。结果表明:在HR-2合金电渣重熔过程中出现了大尺寸的夹杂缺陷,且在墩粗过程中孔洞无法被焊合;未焊合的、长径比较大的初始孔洞沿拔长方向伸长,最终形成了长条形孔洞。
夹杂
孔洞
有限元分析
HR-2 alloy
inclusion
hole
finite element analysis
Abstract
There were large elongated holes near the center of the HR-2 alloy forging rod. The cause of the holes was analyzed by means of microscopic observation, energy spectrum analysis and finite element analysis. The results show that there were large inclusion defects in the process of HR-2 electro-slag remelting and the holes could not be welded in the process of pier roughening. The unwelded initial holes with large aspect ratio elongated along the drawing direction and finally formed long strip holes.
中图分类号 TB31 TG115. 2 DOI 10.11973/lhjy-wl202309008
所属栏目 质量控制与失效分析
基金项目
收稿日期 2022/10/8
修改稿日期
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备注余洪(1996-),男,硕士,助理工程师,主要从事金属材料性能检测和失效分析工作,yuhong202106@163.com
引用该论文: YU Hong,LIU Jun,YANG Wenhua. Cause of hole formation in the core of HR-2 alloy forging rod[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2023, 59(9): 27～30
余洪,刘俊,杨文华. HR-2合金锻棒心部孔洞形成原因[J]. 理化检验－物理分册, 2023, 59(9): 27～30
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参考文献
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【3】陈凯敏,樊洋,赵宜,等.某装载机内齿圈断裂原因[J].理化检验(物理分册),2022,58(7):45-47.
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