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喷砂和退火对DD483合金表面再结晶的影响
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1.西安理工大学 导电材料与复合技术教育部工程研究中心,陕西 西安 710048;2.东方汽轮机股份有限公司 长寿命高温材料国家重点实验室,四川 德阳 618000

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基金项目:

the Natural Science Foundation of China under Grant No. 52071259 and No.51834009, Research Program of Science and Technology of Shanxi Provincial and Shanxi Provincial Project of Special Foundation of Key Disciplines under Grant No. 2018ZDXM-GY-136, No. 2019JM-595 and No. 20JY050, and the fund of State Key Laboratory of Long-Life High Temperature Materials under Grant No. DTCC28EE190226


Effects of Sandblasting and Annealing on Surface Recrystallization of DD483 Superalloy
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Affiliation:

1.Engineering Research Center of the Ministry of Education for Conductive Materials and Composite Technology, Xi'an University of Technology, Xi'an 710048, China;2.State Key Laboratory of Long-Life High Temperature Materials, Dong Fang Turbine Co., Ltd, Deyang 618000, China

Fund Project:

National Natural Science Foundation of China (52071259, 51834009); National Key R&D Program of China (2017YFE0301402); Research Program of Science and Technology of Shaanxi Province (2020zdzx04-04-01, 2018ZDXM-GY-136, 20JY050); Sponsored by State Key Laboratory of Long-Life High Temperature Materials (DTCC28EE190226)

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    摘要:

    研究了DD483合金在服役温度附近经喷砂处理和退火后的组织演变和表面再结晶行为。将DD483合金试样在0.4~0.7 MPa的压力范围内进行喷砂处理,再于1100 ℃退火4和16 h。结果表明,在预定的爆破压力范围内,喷砂能有效地清理合金表面,并将压应力引入表面。喷砂样品退火4和16 h后,Ti和Al元素析出到表面并转化为氧化物,退火后亚表层出现胞状再结晶结构。拓扑密堆积(TCP)相和TiN分别在再结晶区和原始基体近再结晶区析出。此外,再结晶区的厚度随退火时间和实际应力的增加而增加。

    Abstract:

    The microstructure evolution and surface recrystallization behavior of sandblasted DD483 Ni-based superalloys after heat treatment around the service temperature were investigated. The specimens of DD483 alloy were sandblasted under the pressure of 0.4~0.7 MPa and annealed at 1100 °C for 4 and 16 h. The results show that the surface of the alloy is effectively cleaned and the compressive stress is introduced into the surface by sandblasting within the range of predetermined sandblasting pressure. After annealing for 4 and 16 h, the Ti and Al elements volatilize to the surface in the form of oxides, and the cellular recrystallization structure appears on the specimen subsurface. The topologically close-packed (TCP) phase and TiN are precipitated in the recrystallized region and the original matrix near recrystallized region, respectively. In addition, the thickness of the recrystallized region is increased with increasing the annealing time and the actual stress.

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邹军涛,宋大拙,雷艺,卓龙超,商昭,杨功显,张琼元,巩秀芳.喷砂和退火对DD483合金表面再结晶的影响[J].稀有金属材料与工程,2022,51(1):106~112.[Zou Juntao, Song Dazhuo, Lei Yi, Zhuo Longchao, Shang Zhao, Yang Gongxian, Zhang Qiongyuan, Gong Xiufang. Effects of Sandblasting and Annealing on Surface Recrystallization of DD483 Superalloy[J]. Rare Metal Materials and Engineering,2022,51(1):106~112.]
DOI:10.12442/j. issn.1002-185X.20200917

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历史
  • 收稿日期:2020-11-27
  • 最后修改日期:2020-12-29
  • 录用日期:2020-12-29
  • 在线发布日期: 2022-02-04
  • 出版日期: 2022-01-28