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Variation of microstructure by Ru additions in a single crystal Ni based superalloy
X. P. Tan; J. L. Liu; T. Jin; Z. Q. Hu; H. U. Hong; B. G. Choi; I. S. Kim; C. Y. Jo; D. Mangelinck
2014
Source PublicationMaterials Science and Technology
ISSN0267-0836
Volume30Issue:3Pages:289-300
AbstractThe microstructural variation of three single crystal Ni based superalloys with various Ru contents has been investigated. The as cast, solid solution and fully heat treated microstructures were quantitatively analysed. The size of gamma' phase was decreased both in dendrite core and interdendritic regions with Ru additions after a solid solution heat treatment. Appropriate heat treatment schemes of three alloys were determined in terms of quantitative and qualitative microstructural characterisation. It was found that the size and volume fraction of gamma' phase were decreased, and the width of c matrix channels was reduced in the dendrite core regions of fully heat treated microstructure with the additions of Ru. Moreover, the well known reverse partitioning occurred with increasing Ru content. The gamma/gamma' lattice misfits changed from positive to negative and became more negative with Ru additions. The variation of gamma/gamma' lattice misfit was caused by the changes of partitioning ratios of alloying elements via Ru additions.
description.department[tan, x. p. ; liu, j. l. ; jin, t. ; hu, z. q.] chinese acad sci, superalloy div, inst met res, shenyang 110016, peoples r china. [tan, x. p. ; choi, b. g. ; kim, i. s. ; jo, c. y.] korea inst mat sci, high temp mat res grp, chang won 641831, gyeongnam, south korea. [tan, x. p. ; mangelinck, d.] univ aix marseille, cnrs, im2np, umr 7334, f-13397 marseille 20, france. [hong, h. u.] changwon natl univ sarim dong, dept mat sci & engn, chang won 641773, gyeongnam, south korea. ; tan, xp (reprint author), chinese acad sci, superalloy div, inst met res, shenyang 110016, peoples r china. ; xptan1985@gmail.com
KeywordNi Based Superalloy Ru Microstructure Misfit Partitioning Nickel-based Superalloy High-temperature Creep Ruthenium
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72912
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. P. Tan,J. L. Liu,T. Jin,et al. Variation of microstructure by Ru additions in a single crystal Ni based superalloy[J]. Materials Science and Technology,2014,30(3):289-300.
APA X. P. Tan.,J. L. Liu.,T. Jin.,Z. Q. Hu.,H. U. Hong.,...&D. Mangelinck.(2014).Variation of microstructure by Ru additions in a single crystal Ni based superalloy.Materials Science and Technology,30(3),289-300.
MLA X. P. Tan,et al."Variation of microstructure by Ru additions in a single crystal Ni based superalloy".Materials Science and Technology 30.3(2014):289-300.
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