Superplasticity: Recent Approaches
and Trends
Deepika M. Harwani, Vishvesh J. Badheka, and Vivek K. Patel
Abstract The increasing inclination of manufacturers toward reducing the component count in order to produce the product near to the final net shape has given
momentum to superplastic forming. Superplastic forming is based on developing
superplasticity in the polycrystalline materials. The capacity of any material to
develop uniform plastic elongations more than 200% under tension is termed as superplasticity. It helps in the precise and easy fabrication of complex parts without any
joining or welding. The key to achieve large tensile elongations lies in the fine grain
size of the material. Fine grain size and subsequent superplastic properties can be
developed in metals through various approaches like thermo-mechanical and severe
plastic deformation processes. This paper gives a preface to the concept of superplasticity and discusses different methods to induce superplasticity in metals. Highlights
of the recent trends and challenges encountered in the field of superplasticity are also
presented.
Keywords Superplasticity · Fine grain · Severe plastic deformation
1 Introduction
Considerable savings in the cost of materials and its machining has become the
point of prime importance for the modern industries. This urges the designers and
manufacturers across the world to incorporate such processing techniques that lead
to the final product in less time with less amount of machining. Superplastic forming
(SPF) is one such specialist process which is employed in producing thin-walled and
complicatedly designed components at high temperatures and low flow stresses [1].
Characterized by low tooling costs and extreme formability, SPF is already in use to
D. M. Harwani (B) · V. J. Badheka · V. K. Patel
Department of Mechanical Engineering, School of Technology, Pandit Deendayal Petroleum
University, Raisan, Gujarat 382007, India
e-mail: deepika.hphd@sot.pdpu.ac.in
V. K. Patel
Department of Engineering Science, University West, Trollhättan 46186, Sweden
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_33
387
and Trends
Deepika M. Harwani, Vishvesh J. Badheka, and Vivek K. Patel
Abstract The increasing inclination of manufacturers toward reducing the component count in order to produce the product near to the final net shape has given
momentum to superplastic forming. Superplastic forming is based on developing
superplasticity in the polycrystalline materials. The capacity of any material to
develop uniform plastic elongations more than 200% under tension is termed as superplasticity. It helps in the precise and easy fabrication of complex parts without any
joining or welding. The key to achieve large tensile elongations lies in the fine grain
size of the material. Fine grain size and subsequent superplastic properties can be
developed in metals through various approaches like thermo-mechanical and severe
plastic deformation processes. This paper gives a preface to the concept of superplasticity and discusses different methods to induce superplasticity in metals. Highlights
of the recent trends and challenges encountered in the field of superplasticity are also
presented.
Keywords Superplasticity · Fine grain · Severe plastic deformation
1 Introduction
Considerable savings in the cost of materials and its machining has become the
point of prime importance for the modern industries. This urges the designers and
manufacturers across the world to incorporate such processing techniques that lead
to the final product in less time with less amount of machining. Superplastic forming
(SPF) is one such specialist process which is employed in producing thin-walled and
complicatedly designed components at high temperatures and low flow stresses [1].
Characterized by low tooling costs and extreme formability, SPF is already in use to
D. M. Harwani (B) · V. J. Badheka · V. K. Patel
Department of Mechanical Engineering, School of Technology, Pandit Deendayal Petroleum
University, Raisan, Gujarat 382007, India
e-mail: deepika.hphd@sot.pdpu.ac.in
V. K. Patel
Department of Engineering Science, University West, Trollhättan 46186, Sweden
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_33
387