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噴砂和退火對DD483合金表面再結晶的影響
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1.西安理工大學 導電材料與復合技術教育部工程研究中心，陜西 西安 710048;2.東方汽輪機股份有限公司 長壽命高溫材料國家重點實驗室，四川 德陽 618000

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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合金在服役溫度附近經(jīng)噴砂處理和退火后的組織演變和表面再結晶行為。將DD483合金試樣在0.4~0.7 MPa的壓力范圍內(nèi)進行噴砂處理，再于1100 ℃退火4和16 h。結果表明，在預定的爆破壓力范圍內(nèi)，噴砂能有效地清理合金表面，并將壓應力引入表面。噴砂樣品退火4和16 h后，Ti和Al元素析出到表面并轉化為氧化物，退火后亞表層出現(xiàn)胞狀再結晶結構。拓撲密堆積（TCP）相和TiN分別在再結晶區(qū)和原始基體近再結晶區(qū)析出。此外，再結晶區(qū)的厚度隨退火時間和實際應力的增加而增加。

    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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鄒軍濤,宋大拙,雷藝,卓龍超,商昭,楊功顯,張瓊元,鞏秀芳.噴砂和退火對DD483合金表面再結晶的影響[J].稀有金屬材料與工程,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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  • 收稿日期:2020-11-27
  • 最后修改日期:2020-12-29
  • 錄用日期:2020-12-29
  • 在線發(fā)布日期: 2022-02-04
  • 出版日期: 2022-01-28