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不同熱處理下析出相和晶粒尺寸對Incone1 718高溫合金力學(xué)性能的影響
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作者單位:

太原科技大學(xué) 材料科學(xué)與工程學(xué)院，山西 太原 030024

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基金項(xiàng)目:

國家自然科學(xué)基金（52175353）、山西省專利轉(zhuǎn)化專項(xiàng)計(jì)劃項(xiàng)目（202201001）、山西省重點(diǎn)研發(fā)計(jì)劃項(xiàng)目（202102150401002）


Effect of Precipitate Phases and Grain Size on Mechanical Properties of Inconel 718 Superalloy After Various Heat Treatments
Author:
Affiliation:

School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

Fund Project:

National Natural Science Foundation of China (52175353); Shanxi Province Patent Conversion Special Plan Program (202201001); Shanxi Province Key Research and Development Program (202102150401002)

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    摘要:

    采用不同熱處理工藝對Inconel 718高溫合金進(jìn)行了組織觀察和性能研究以分析熱處理機(jī)理。結(jié)果表明，析出相的類型和數(shù)量以及晶粒尺寸對Inconel 718高溫合金熱處理試樣的性能有不同的影響。γ"相和γ'相以及晶粒尺寸主要影響強(qiáng)度，δ相主要影響塑性。此外，γ"和γ'強(qiáng)化相的析出可以提高屈服強(qiáng)度。合金中γ"和γ'相含量相近時(shí)，強(qiáng)度與平均晶粒尺寸成反比。塑性易受δ相含量和形狀的影響。適量的δ相對塑性有益，但過量的δ相會使塑性降低。

    Abstract:

    Various heat treatments were conducted on Inconel 718 superalloy, and the resultant microstructures and properties were investigated to analyze the mechanisms of heat treatments. Results show that the type and quantity of precipitate phases and the grain size have different effects on the properties of Inconel 718 superalloy after various heat treatments. The γ" and γ' phases as well as grain size mainly influence the strength, and the δ phase mainly influences the plasticity. Besides, the precipitation of γ" and γ' strengthening phases can improve the yield strength. The alloy strength is inversely proportional to mean grain size when the γ" and γ' phases have similar contents. The plasticity is susceptible to the content and shape of δ phase. A proper amount of δ phase is beneficial to the plasticity, but excessive δ phase degrades plasticity.

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張旻,馬川川,薛春,鐘文昌,高波,帥美榮,拓雷鋒,楚志兵.不同熱處理下析出相和晶粒尺寸對Incone1 718高溫合金力學(xué)性能的影響[J].稀有金屬材料與工程,2024,53(8):2131~2136.[Zhang Min, Ma Chuanchuan, Xue Chun, Zhong Wenchang, Gao Bo, Shuai Meirong, Tuo Leifeng, Chu Zhibing. Effect of Precipitate Phases and Grain Size on Mechanical Properties of Inconel 718 Superalloy After Various Heat Treatments[J]. Rare Metal Materials and Engineering,2024,53(8):2131~2136.]
DOI：10.12442/j. issn.1002-185X.20230684

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  • 收稿日期:2023-11-01
  • 最后修改日期:2024-01-16
  • 錄用日期:2024-01-31
  • 在線發(fā)布日期: 2024-08-09
  • 出版日期: 2024-08-08