Microstructural Evolution of Inconel 718 During Pancake Forging

被引:0
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作者
S. Chenna Krishna
N. K. Karthick
Ashok Kumar Avula
Abhay K. Jha
Bhanu Pant
Roy M. Cherian
机构
[1] Vikram Sarabhai Space Centre,Materials and Mechanical Entity
[2] Rajiv Gandhi University of Knowledge Technologies,Department of Metallurgical and Materials Engineering
关键词
Inconel 718; JMAK model; Dynamic recrystallization; Grain size;
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学科分类号
摘要
Pancake forging of Inconel 718 was performed using a hydraulic press at temperature of 1273 and 1323 K. The effect of forging temperature on the microstructure of the pancakes was studied using optical microscopy. Variation in the microstructure was observed at different locations of the pancakes with fully recrystallized grains, partially recrystallized grains and necklace structure. Strain, strain rate and temperature across the pancake were determined through FEM analysis, and Johnson–Mehl–Avrami–Kolmogorov (JMAK) type model was employed to estimate the recrystallized grain size and volume fraction. There was close match between the predicted values and actual measurements.
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页码:1485 / 1488
页数:3
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