A critical review on special forming processes and associated research for lightweight components based on sheet and tube materials

Abstract

-Lightweight materials, such as ultra-high strength steel, titanium alloys and aluminum alloys, are used widely in aerospace and automobile industries leading to increasing demands for advanced forming technologies. Recently many innovative sheet-and tube-forming methods have been proposed by researchers and R&D facilities around the word. These methods can greatly improve the formability of materials with low plasticity and can produce complex-shaped parts with good surface qualities. This review aims at providing an insight into the latest developments of particular sheet-or tubular-metal forming process and shows basic applications in modern industry.

Review on Advances in Metal Micro-Tube Forming

“…Additional mechanical loads on the formed component can be utilized to contribute to the plastic flow of the formed material or supporting areas of the component during expansion [62]. Applications of hydroforming at macro-scale predominantly concern the industrial production of thin-walled, complex-shaped components for numerous sectors, such as the automotive and aerospace industry or sanitary and piping manufacture [63][64][65][66][67]. Scaled-down hydroforming offers an economic potential for the micro-manufacturing industries, for example, for the production of metallic components for medical technology, elements of fuel cells, micro-fluidic devices, micro-heat exchangers, or hollow micro-shafts [6,68,69].…”

A novel approach to determine plastic hardening curves of AA7075 sheet utilizing hydraulic bulging test at elevated temperature

“…The recent prevailing trend to produce light weight components utilizing light materials to reduce emission and energy has pressed the need for accurate sheet metal modeling [1]. The authors are focused on the study of yield condition and plastic hardening [2].…”

Effect of the thickness reduction of specimens on the limit strains in thermomechanical tensile tests for hot-stamping studies

“…In addition, post heat treatment is usually required after forming to further increase component strength, which may result in low dimensional accuracy and increase manufacturing costs. To address these issues, advanced forming technologies, such as hydroforming, superplastic forming [5], quick plastic forming [6], and warm/hot stamping processes [7,8], have been developed. Forming aluminium alloy sheets at elevated temperatures enables to utilise significantly improved formability of the material and deform sheets into complex geometries [9].…”