Static Recrystallization Behavior of Inconel 718 Alloy during Thermal Deformation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第2期
论文作者：魏先平 ZHENG Wenjie SONG Zhigang LEI Ting YONG Qilong XIE Qingcheng
文章页码：379 - 383
摘 要：The softening behavior of Inconel 718 alloy at different temperatures was studied using twostage interrupted compression method on Gleeble1500D thermal stimulator, and the 2% offset method was applied to analyze the experimental dates. Finally, the static recrystallization fraction was obtained. At the same times, optical microscope（OM） and transmission electron microscopy（TEM） were employed to investigate the microstructure characteristic. The experimental results showed that the recrystallization was more sensitive to temperature than holding time. The recrystallization process finished quickly above 1 050 ℃, and significantly prolonged below 1 025 ℃. Additionally, the dynamical model of static recrystallization follows the Avrami equation. The nucleating mechanism was characterized by bulging at grain boundary and merging of sub-grain.
魏先平1,2，ZHENG Wenjie2，SONG Zhigang2，LEI Ting1，YONG Qilong2，XIE Qingcheng3
1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology2. Central Iron and Steel Research Institute3. No.704 Institute of China Shipbuilding Industry Corporation
摘 要：The softening behavior of Inconel 718 alloy at different temperatures was studied using twostage interrupted compression method on Gleeble1500D thermal stimulator, and the 2% offset method was applied to analyze the experimental dates. Finally, the static recrystallization fraction was obtained. At the same times, optical microscope（OM） and transmission electron microscopy（TEM） were employed to investigate the microstructure characteristic. The experimental results showed that the recrystallization was more sensitive to temperature than holding time. The recrystallization process finished quickly above 1 050 ℃, and significantly prolonged below 1 025 ℃. Additionally, the dynamical model of static recrystallization follows the Avrami equation. The nucleating mechanism was characterized by bulging at grain boundary and merging of sub-grain.
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