Results 171 to 180 of about 1,692 (216)
Some of the next articles are maybe not open access.
International Journal of Mechanical Sciences, 1970
Abstract Part I of this paper describes the phenomenon of superplasticity in metals and the behaviour of superplastic alloys in simple tension. The advantage of using these materials in forging processes and the possibility of developing, for superplastic alloys, vacuum forming, pressure forming and blow-moulding techniques similar to those used in ...
T.Y.M. Al-Naib, J.L. Duncan
openaire +1 more source
Abstract Part I of this paper describes the phenomenon of superplasticity in metals and the behaviour of superplastic alloys in simple tension. The advantage of using these materials in forging processes and the possibility of developing, for superplastic alloys, vacuum forming, pressure forming and blow-moulding techniques similar to those used in ...
T.Y.M. Al-Naib, J.L. Duncan
openaire +1 more source
Superplasticity and superplastic forming of aluminum metal-matrix composites
JOM, 1992Superplasticity hos been observed in many aluminum metal-matrix composites at extremely high strain rates (approximately 0.1–1 S−1). These materials generally exhibited a strain-rate sensitivity value of about 0.3 and a maximum elongation of about 300%.
T. G. Nieh, J. Wadsworth
openaire +1 more source
2003
An inherent limitation of conventional aluminum alloys is that they are unstable when plastically deformed by stretching which leads to catastrophic necking when tensile testing and limitations on uniform deformation during stretch forming under tensile stress.
openaire +1 more source
An inherent limitation of conventional aluminum alloys is that they are unstable when plastically deformed by stretching which leads to catastrophic necking when tensile testing and limitations on uniform deformation during stretch forming under tensile stress.
openaire +1 more source
1978
During the past ten years, superplastic metal forming has progressed from a laboratory curiosity to a practical, economical manufacturing technique. The chapter, describing that progression, consists of three parts: the development of the relationships between stress and strain rate of superplastic alloys, and the effects of strain hardening and ...
D. S. Fields, J. F. Hubert
openaire +1 more source
During the past ten years, superplastic metal forming has progressed from a laboratory curiosity to a practical, economical manufacturing technique. The chapter, describing that progression, consists of three parts: the development of the relationships between stress and strain rate of superplastic alloys, and the effects of strain hardening and ...
D. S. Fields, J. F. Hubert
openaire +1 more source
2006
AbstractThis article discusses many of the processes and related considerations involved in the forming of superplastic sheet metal parts. It reviews the requirements for superplasticity and describes the characteristics of superplastic metals. The characterization of superplastic behavior includes the characterization of plastic flow, internal ...
A.K. Ghosh, C.H. Hamilton
openaire +1 more source
AbstractThis article discusses many of the processes and related considerations involved in the forming of superplastic sheet metal parts. It reviews the requirements for superplasticity and describes the characteristics of superplastic metals. The characterization of superplastic behavior includes the characterization of plastic flow, internal ...
A.K. Ghosh, C.H. Hamilton
openaire +1 more source
1988
Abstract : Over the past 15 to 20 years, superplasticity has progressed from a laboratory curiosity to become utilized on a world-wide basis through superplastic forming processes in the manufacture of parts for many types of applications, ranging from aerospace to architectural. Recent work has demonstrated that superplasticity can be observed in many
Neil E. Paton, C. H. Hamilton
openaire +1 more source
Abstract : Over the past 15 to 20 years, superplasticity has progressed from a laboratory curiosity to become utilized on a world-wide basis through superplastic forming processes in the manufacture of parts for many types of applications, ranging from aerospace to architectural. Recent work has demonstrated that superplasticity can be observed in many
Neil E. Paton, C. H. Hamilton
openaire +1 more source
Superplastic bulge forming of domes
Materials Science and Technology, 1993AbstractAn experimental method has been developed to study the effects of different forming procedures, including constant pressure, constant apex velocity, constant apex strain rate (and, indeed, any arbitrary forming operation), on the strain rate sensitivity index m–log (strain rate ɛ) curve for the bulge forming of domes.
Song Yu-Quan, Z. C. Wang
openaire +1 more source
Superplastic Forming of Zirconia
1995The development of the capability to plastically deform crystalline ceramic materials is a significant triumph for the materials science community. Studied since the 1950’s with relatively modest success, the science and technology of ceramic plasticity received a tremendous boost in 1986 with the pioneering experiments of Wakai et al who demonstrated ...
openaire +1 more source
Superplastic Forming of Aerospace Materials
2016This chapter discusses the phenomenon of superplasticity, as seen in different materials such as metals/alloys, intermetallics, ceramics, bulk metallic glasses and composites. The phenomenon of low temperature/high strain rate superplasticity is also briefly discussed. The various forming operations and the recent developments in forming processes like
K. A. Padmanabhan +2 more
openaire +1 more source
Commercial applications of superplastic forming
Journal of Materials Processing Technology, 1997Abstract Japanese commercial superplastic forming of Ti, Al alloys and duplex stainless steels started in 1989 by a joint venture. This was several years behind Europe and USA. The joint venture, however, found some unique applications which could not be seen in other countries, owing greatly to information available nowadays and also to excellent ...
openaire +1 more source