A method based on semi-solid forming for eliminating Laves eutectic phase of INCONEL 718 alloy
A method based on semi-solid forming for eliminating Laves eutectic phase of INCONEL 718 alloy
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基于半固态成形消除INCONEL 718合金Laves共晶相的方法
DOI：
10.1016/j.jmatprotec.2017.05.015
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发表时间：
2017-11-01
影响因子：
6.3
通讯作者：
Li, Dianzhong
中科院分区：
文献类型：
--
作者：
Guo, Yifeng;Sun, Mingyue;Li, Dianzhong
基于半固态成形技术，提出了一种用于消除INCONEL 718（IN 718）中有害的Laves共晶（LE）相的双相区变形保压工艺（DHP）。为了验证该方法的可行性，实验研究了固液比和等温保温对LE形成和变形合金组织的影响。在凝固末期进行变形和保温，可以消除LE，细化组织。LE的分数从铸态试样中的约10.8%降低到变形试样中的2.53%（在1700 ℃下在2分钟等温保持过程之后的0.1/s 50%压缩）。
An energy efficient method called deformation and holding process (DHP) in two phase region, which applied for eliminating the harmful Laves eutectic (LE) phase of INCONEL 718 (IN718) was proposed based on semi-solid forming technology. To verify its feasibility, the effects of solid-liquid fraction and isothermal holding on formation of LE and the microstructure of the deformed alloys were investigated experimentally. LE can be eliminated and the microstructure is refined when deformation and holding were carried out at the end of solidification. The fraction of the LE decreases from about 10.8% in the as-cast specimens to 2.53% in the deformed specimens (0.1/s 50% compression at 1700 degrees C following 2 min isothermal holding process).