Influence of interrupted cooling on the development of bimodal γ' precipitate distributions in ATI 718Plus

被引：2
作者：
Kumari, Geeta [1 ,2 ]
Sundararaman, M. [2 ]
Boehlert, Carl J. [1 ]
Poplawsky, Jonathan D. [3 ]
Unocic, Kinga A. [3 ]
Sankaran, S. [2 ]
机构：
[1] Michigan State Univ, E Lansing, MI 48824 USA
[2] Indian Inst Technol Madras, Chennai, India
[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Knoxville, TN USA
来源：
JOURNAL OF MATERIALS SCIENCE | 2023年 / 58卷 / 42期
关键词：
NICKEL-BASE SUPERALLOY; SIZE DISTRIBUTIONS; HEAT-TREATMENT; DELTA-PHASE; MICROSTRUCTURE; EVOLUTION; BEHAVIOR;
D O I：
10.1007/s10853-023-08988-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of aging treatments on the evolution of the gamma' precipitates in ATI 718Plus was studied using scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, and atomic probe tomography. A set of aging treatments was performed on solution-treated samples to obtain various gamma' size distributions. The aging temperatures ranged from 720 to 900 degrees C with holding times of either two hours (for the 900 degrees C aging temperature) or 10 h (for the 720 degrees C and 750 degrees C aging temperatures) followed by either air cooling, furnace cooling, or water quenching. The cooling method and aging temperature influenced the distribution of the solute elements. This work discussed the evolution of the gamma' precipitation during single-step aging and two-step aging involving continuous cooling or interrupted cooling. A bimodal size distribution of the gamma' precipitates was obtained through interrupted cooling two-step aging treatments, while single-step aging resulted in unimodal gamma' precipitate distributions.
引用
收藏
页码：16445 / 16461
页数：17
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