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Transient Liquid Phase Bonding Single-Crystal Superalloys with Orientation Deviations: Creep Properties
Sheng, Naicheng; Liu, Jide; Jin, Tao; Sun, Xiaofeng; Hu, Zhuangqi; naicheng.sheng@fau.de
2015
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN1073-5623
Volume46AIssue:12Pages:5772-5781
AbstractSuperalloys single crystals with various orientation deviations were bonded using transient liquid phase bonding method, then the creep properties of the bonded specimens were tested at 1033 K (760 degrees C)/780 MPa. It is found that the creep life of the bonded specimens decreases with the increase of the relative orientation deviations. Despite the fracture of the specimens appears on the bonding region, the deformation mechanism changes from specimens with low angle boundary to high angle boundary. In low angle boundary specimens, cleavage originated from the defects grows perpendicularly to the tensile stress and connects through the different slip planes around the cleavage planes. In this case, the deformation proceeds by the dislocations and stacking faults on multi- planes. With increasing orientation deviation, dislocation and stacking faults moved on single plane. As a result, the dislocations interact with the grain boundary and lead to fracture. Based on the present investigation, the orientation of the bonded superalloys single crystal should be controlled so that the introduced grain boundaries are relatively small and exhibit higher creep strength. (C) The Minerals, Metals & Materials Society and ASM International 2015
description.department[sheng, naicheng] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china ; [liu, jide ; jin, tao ; sun, xiaofeng ; hu, zhuangqi] chinese acad sci, superalloys div, inst met res, beijing 100864, peoples r china
Funding OrganizationNational Basic Research Program (973 Program) of China [2010CB631200 (2010CB631206)]; National High Technology Research and Development Program (863 Program) of China [2014AA041701]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75221
Collection中国科学院金属研究所
Corresponding Authornaicheng.sheng@fau.de
Recommended Citation
GB/T 7714
Sheng, Naicheng,Liu, Jide,Jin, Tao,et al. Transient Liquid Phase Bonding Single-Crystal Superalloys with Orientation Deviations: Creep Properties[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2015,46A(12):5772-5781.
APA Sheng, Naicheng,Liu, Jide,Jin, Tao,Sun, Xiaofeng,Hu, Zhuangqi,&naicheng.sheng@fau.de.(2015).Transient Liquid Phase Bonding Single-Crystal Superalloys with Orientation Deviations: Creep Properties.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,46A(12),5772-5781.
MLA Sheng, Naicheng,et al."Transient Liquid Phase Bonding Single-Crystal Superalloys with Orientation Deviations: Creep Properties".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A.12(2015):5772-5781.
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