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Superplastic forming and diffusion bonding for four-layer sheets structure of nickel-base superalloy

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The superplastic forming and diffusion bonding (SPF/DB) is applied in aviation and space flight field. The SPF/DB process with gas pressure control for dissimilar superalloy structure was studied. Diffusion bonding parameters, including bonding temperature T, pressure P, time t, affect the joining mechanism. When the bonded specimen with 50μm thick nickel foil interlayer was tensile at room temperature, shear fracture of the joints with nickel foil interlayer takes place at the GH4141 superalloy part. The SPF/DB of four-layer sheets structure was investigated. The optimum parameters for the SPF/DB process are: forming temperature T=1243K, forming pressure P=IMPa, forming time t=35min. The microstructure of the bonded samples was characterized. The microstructure shows an excellent bonding at the interfaces. The distribution of thickness after SPF/DB was investigated.

Original languageEnglish
Title of host publicationSuperplasticity in Advanced Materials - ICSAM 2006 - Proceedings of the 9th International Conference on Superplasticity in Advanced Materials
PublisherTrans Tech Publications Ltd
Pages163-168
Number of pages6
ISBN (Print)0878494359, 9780878494354
DOIs
StatePublished - 2007
Event9th International Conference on Superplasticity in Advanced Materials, ICSAM 2006 - Chengdu, China
Duration: 23 Jun 200626 Jun 2006

Publication series

NameMaterials Science Forum
Volume551-552
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference9th International Conference on Superplasticity in Advanced Materials, ICSAM 2006
Country/TerritoryChina
CityChengdu
Period23/06/0626/06/06

Keywords

  • Four-layer sheets structure
  • Nickel foil
  • SPF/DB
  • Superalloy

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