Grain refinement and superplasticity of Inconel 718 processed by Multi-Pass High-Pressure sliding

被引：10
|
作者：
Tang, Yongpeng [1 ,2 ]
Edalati, Kaveh [2 ]
Masuda, Takahiro [3 ]
Takizawa, Yoichi [4 ]
Yumoto, Manabu [4 ]
Horita, Zenji [1 ,2 ,5 ,6 ]
机构：
[1] Kyushu Inst Technol, Grad Sch Engn, Kitakyushu, Fukuoka 8048550, Japan
[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, WPI, Fukuoka 8190395, Japan
[3] Yokohama Natl Univ, Dept Mech Engn & Mat Sci, Yokohama, Kanagawa 2408501, Japan
[4] Nagano Forging Co Ltd, Technol Dept, Nagano 3810003, Japan
[5] Kumamoto Univ, Magnesium Res Ctr, Kumamoto 8608555, Japan
[6] Saga Univ, Synchrotron Light Applicat Ctr, Saga 8408502, Japan
来源：
MATERIALS LETTERS | 2021年 / 300卷
关键词：
Severe plastic deformation; Multi-pass high-pressure sliding; Grain refinement; Superplasticity; Inconel; 718;
D O I：
10.1016/j.matlet.2021.130144
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Inconel 718 was successfully processed by multi-pass high-pressure sliding (MP-HPS) for production of ultrafine-grained structures in rods with upsized dimensions. An ultrafine-grained (UFG) structure with an average grain size of similar to 140 nm was developed through rotation of 45 degrees. Tensile testing at 1073 K with an initial strain rate of 2x10(-2) s(-1) led to superplastic elongations more than 400%. A relation is established between hardness and elongation to failure so that it should be possible to predict the advent of superplasticity only from the hardness measurement.
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页数：4
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