Development of extra fine grain structure of superalloy 718

Wun-Sinhou, Shih Feng Chang, Chung Chun Tsai, Hwa-Teng Lee, Yu-Leiliu, Wei Cheng Kuo, Shang Chih Wang

研究成果: Article

摘要

The thermomechanical process is commonly used for the manufacturing of the fine grain structure for Inconel 718, but it is energy consumptive and hard to control precisely. In this study, cold forming combined with recrystallized treatment were used as an alternative method for achieving a fine grain structure, wherein proper control of δ phase formation is quite essential. With the aid of fine uniformly dispersed δ phase precipitates in the matrix, the rapid growth of recrystallized grains that usually happens at high temperature is substantially retarded. Consequently, a fine recrystallized structure with an average grain size of 2-3μm is obtained, which is much finer than the reported finest grains of 11.2μm obtainable by conventional thermomechanical process.

原文English
頁(從 - 到)31-36
頁數6
期刊SEAISI Quarterly (South East Asia Iron and Steel Institute)
39
發行號4
出版狀態Published - 2010

指紋

Crystal microstructure
heat resistant alloys
Superalloys
Precipitates
cold working
Inconel (trademark)
precipitates
manufacturing
grain size
fine structure
Temperature
matrices
energy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

引用此文

Wun-Sinhou, Chang, S. F., Tsai, C. C., Lee, H-T., Yu-Leiliu, Kuo, W. C., & Wang, S. C. (2010). Development of extra fine grain structure of superalloy 718. SEAISI Quarterly (South East Asia Iron and Steel Institute), 39(4), 31-36.
Wun-Sinhou ; Chang, Shih Feng ; Tsai, Chung Chun ; Lee, Hwa-Teng ; Yu-Leiliu ; Kuo, Wei Cheng ; Wang, Shang Chih. / Development of extra fine grain structure of superalloy 718. 於: SEAISI Quarterly (South East Asia Iron and Steel Institute). 2010 ; 卷 39, 編號 4. 頁 31-36.
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Wun-Sinhou, Chang, SF, Tsai, CC, Lee, H-T, Yu-Leiliu, Kuo, WC & Wang, SC 2010, 'Development of extra fine grain structure of superalloy 718', SEAISI Quarterly (South East Asia Iron and Steel Institute), 卷 39, 編號 4, 頁 31-36.

Development of extra fine grain structure of superalloy 718. / Wun-Sinhou; Chang, Shih Feng; Tsai, Chung Chun; Lee, Hwa-Teng; Yu-Leiliu; Kuo, Wei Cheng; Wang, Shang Chih.

於: SEAISI Quarterly (South East Asia Iron and Steel Institute), 卷 39, 編號 4, 2010, p. 31-36.

研究成果: Article

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T1 - Development of extra fine grain structure of superalloy 718

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AU - Chang, Shih Feng

AU - Tsai, Chung Chun

AU - Lee, Hwa-Teng

AU - Yu-Leiliu,

AU - Kuo, Wei Cheng

AU - Wang, Shang Chih

PY - 2010

Y1 - 2010

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AB - The thermomechanical process is commonly used for the manufacturing of the fine grain structure for Inconel 718, but it is energy consumptive and hard to control precisely. In this study, cold forming combined with recrystallized treatment were used as an alternative method for achieving a fine grain structure, wherein proper control of δ phase formation is quite essential. With the aid of fine uniformly dispersed δ phase precipitates in the matrix, the rapid growth of recrystallized grains that usually happens at high temperature is substantially retarded. Consequently, a fine recrystallized structure with an average grain size of 2-3μm is obtained, which is much finer than the reported finest grains of 11.2μm obtainable by conventional thermomechanical process.

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