Products Development of Superplastic 5083 Alloy 'ALNOVI-1'

Onishi, Y.

doi:10.4028/www.scientific.net/msf.304-306.819

Cited by 6 publications

(3 citation statements)

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“…They employ a wide temperature window (360ºC to 560ºC) for process flexibility in combination with preforming [17,18]. Examples where these methods have been applied in Japanese production include motorcycle gas tanks and SUV external spare tire shells [19]. Superform Metal Ltd. has developed a complex process to achieve deep draw components and limit the degree of material thinning incurred during forming [21,22].…”

Section: Forming Process Developmentmentioning

confidence: 99%

On the Expanded Usage of Superplastic Forming of Aluminium Sheet for Automotive Applications

Friedman

Luckey²

2004

MSF

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Superplastic forming (SPF) is now considered a standard process in several industries including aerospace, rail and architecture. The ability to achieve large strains to failure in aluminum sheet alloys makes SPF an attractive option for the manufacture of complex three-dimensional panels in the automotive industry as well. However, the relatively slow cycle time and cost penalty associated with sheet alloys specially-processed to be suitable for superplastic forming has mostly limited this process to low-volume specialty vehicles. In order to achieve widespread usage in the automotive industry, the production volume for which SPF is cost-effective must be increased. This will require developments to reduce the material cost penalty as well as a variety of modifications to the manufacturing process that can decrease both the forming time as well as the overall process cycle time. While there is substantial literature on the superplastic characteristics of aluminum alloys, the bulk of this work is on materials that are typically cost-prohibitive and perhaps not appropriate for automotive applications. Additionally, there has been a limited amount of work done on developing superplastic forming as a manufacturing process addressing topics such as automation, lubrication, and pre and post forming technologies that serve to decrease overall component cycle time. One key to developing a cost-effective superplastic forming process for automotive applications is to adopt a systems approach where the integration of SPF into up and downstream operations is considered. This paper presents a perspective on the developments that are necessary to increase the production volume in which superplastic forming is cost competitive with traditional forming technologies..

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Section: Forming Process Developmentmentioning

confidence: 99%

On the Expanded Usage of Superplastic Forming of Aluminium Sheet for Automotive Applications

Friedman

Luckey²

2004

MSF

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“…In recent years, SPF has also been used to form automotive aluminum panels for low volume, niche applications (Ref [3][4][5][6]. Transition of this technology to high volume applications, such as in the mainstream automotive industry, requires a shift from the aerospace paradigm of low initial investment and high piece cost to one of high initial investment and low piece cost.…”

Section: Introductionmentioning

confidence: 99%

Superplastic Behavior of Copper-Modified 5083 Aluminum Alloy

Verma

Kim

2007

J. of Materi Eng and Perform

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An AA5083 aluminum alloy was modified with two different levels of Cu additions, cast by direct-chill method, and thermo-mechanically processed to sheet gauge. Copper additions reduced sheet grain size, decreased tensile flow stress and significantly increased tensile elongation under most elevated temperature test conditions. The high-Cu (0.8 wt.%) alloy had the finest grain size 5.3 lm, a peak strain-rate sensitivity of 0.6 at a strain-rate of 1 · 10 )2 s )1 , and tensile elongation values between 259 and 584% over the temperature range, 400-525°C, and the strain rate range, 5 · 10 )4 to 1 · 10 )2 s )1 , investigated. In biaxial pan forming tests, only the Cu-containing alloys successfully formed pans at the higher strain rate 10 )2 s )1 . The high-Cu alloy showed the least die-entry thinning. Comparison of ambient temperature mechanical properties in O-temper state showed the high-Cu alloy to have significantly higher yield strength, ultimate strength, and ductility compared to the base 5083 alloy.

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“…Also the new wider applications in Japan using commercially produced superplastic 5083 sheet have been found in some diverse markets, i.e., the gate, the output port of a food ticket vending machine, the window panel of the train, the top tablet frame of an automatic drug package for medical purposes, the tire housing for a recreational vehicle (Fig. 7), the fuel tank for a motorcycle, the architectural panel and the door sill of the Viper model produced by Chrysler Dodge Company [31]. The positive properties of aluminum over plastics (e.g.…”

Section: High-strain-rate Superlasticitymentioning

confidence: 99%