Study of δ Phase on Static Recrystallization Behavior of Inconel 718 Alloy
Study of δ Phase on Static Recrystallization Behavior of Inconel 718 Alloy
复制标题
DOI：
10.1166/jnn.2012.6513
复制
发表时间：
2012-09-01
影响因子：
--
通讯作者：
Hou, Wen-Hsin
中科院分区：
文献类型：
--
作者：
Lee, Hwa-Teng;Hou, Wen-Hsin
Inconel718合金的力学性能取决于其显微组织特征。目前，在制造过程中控制晶粒度是通过使用在足够高的温度下执行的强大的热成形工艺来实现的，以诱导动态再结晶。本研究提出了一种通过静态再结晶和适当控制析出量来获得均匀细晶组织的替代工艺。结果表明，可获得平均晶粒度为ASTM7号的细小组织。在这项研究中，迄今可获得的最细颗粒约为200纳米。因此，提出的技术提供了一种可行的方法来控制晶粒度，而不需要消耗能量和技术复杂的热成形过程。
The mechanical properties of Inconel 718 alloy depend on its microstructural features. Controlling the grain size during manufacturing is currently achieved through the use of a powerful hot forming process performed at a temperature sufficiently high to induce dynamic recrystallization. The present study proposes an alternative technique to achieve a uniform fine grain structure by using static recrystallization and a proper control of 8 precipitation. The results show that a fine structure with an average grain size of ASTM No. 7 can be achieved. And in this study the finest grains yet achievable is ca. 200 nm. As a result, the proposed technique provides a feasible means of controlling the grain size without the need for an energy consumption and technically sophisticated hot forming process.