J-GLOBAL ID:200904067945301437  Research Project code:9911002607 Update date:Feb. 12, 2003

Study on internal stress superplasticity

Study period:1998 - 2000
Organization (1):
Investigating Researcher (5):
Research overview:
Superplasticity is a phenomenon in which a material shows a large tensile expansion under a certain condition. This phenomenon makes plastical processing applicable for processing retardant-advanced materials for saving important material resources and processing cost. This phenomenon includes a phenomenon called internal stress superplasticity in which when thermal cycle is added to the metals with mutual transformation or metal matrix composites, transformation strain or thermal strain generates strong internal stress inside the materials and superplasticity transformation appears resulting in large tensile expansion. We are studying this internal stress superplasticity by theoretically analyzing the deformation mechanism and experimentally verifying it. We also try to apply it for superplasticity processing of single crystal heat resistant alloys.
Research program: Ordinary Research
Ministry with control over the research :
Ministry of Education, Culture, Sports, Science and Technology

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