Warm forming behavior of high strength aluminum alloy AA7075

Wang, Hui; Luo, Yao; Friedman, Peter A.; Chen, Minghe; Lin, Gao

doi:10.1016/s1003-6326(11)61131-x

Cited by 170 publications

(58 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bu malzemelerden bir tanesi de alüminyum alaşımlarıdır. AA 5754 Al-Mg alaşımları, sahip oldukları yüksek süneklik ve dayanıklılık [6], iyi kaynak edilebilirlik ve düşük yoğunluk gibi özelliklerinden dolayı otomotiv endüstrisi başta olmak üzere yaygın kullanım alanına sahiptirler [7]. Ancak bu alaşımların şekillendirilebilirlikleri, mikroyapıları nedeniyle oda sıcaklığında çelik sac malzemelere nazaran çok düşüktür [8].…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Birincisi, PLC etkisinin sıcaklık artışı ile ortadan kalkmasından dolayı Al-Mg alaşımlarının şekillendirilebilirliklerinde önemli artışın görülmesidir [15]. Boogaard, AA 5754 alaşımının limit çekme oranı (LÇO) üzerine yapmış olduğu çalışmada sıcaklığın etkisi ile çekme oranının %23,8, yine Bolt ve arkadaşları da sıcaklık etkisi ile AA 5754 alaşımının çekme oranının %29,1 arttığını belirtmişlerdir [7,16]. Sıcaklık artışının bir diğer avantajı ise şekillendirme sırasında deformasyondan kaynaklı kap duvarlarındaki gerilmeleri azaltmasıdır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

See 1 more Smart Citation

AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

Özek¹,

Taşdemir²

2017

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

show abstract

Section: Gi̇ri̇ş (Introduction)unclassified

AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

Özek¹,

Taşdemir²

2017

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

show abstract

“…On the warm forming, both blank and dies are heated during the process [2][3]. However, the heating of the dies critically increases the forming costs and set-up and maintenance aspects.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that sufficient formability of high strength aluminium alloys could be achieved by the selection of the pertinent pre-treatment conditions and deformation temperatures. Wang et al [2] presented a paper where material characterization and LDR tests were performed using the 7075-T6 material. They found that total elongation at fracture increased between 140 ºC and 220 ºC due to the increase in strain rate sensitivity, which controls diffuse necking and prevents plastic strain from concentrating in a localized neck.…”

Section: Introductionmentioning

confidence: 99%

Hot stamping of AA7075 aluminum sheets

Mendiguren

Argandoña

Galdos

2016

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. In this work the formability of a high strength aluminium alloy (AA7075-T6) for the stamping of an automotive component has been studied. Due to the low formability of the selected alloy, two different heat assisted forming strategies have been analysed. On the one hand, the W-temper process, where the thermal process is carried out prior to the forming operation. On the other hand, the hot stamping process, where the thermal process is carried out at the same time as the forming. The results showed that both technology were able to form the component avoiding any failure of the material. On the contrary, both processes reduced the final mechanical properties of the material compared to the as received material condition. However, the obtained mechanical properties doubled the strength of commonly used 5xxx and 6xxx aluminium alloys.

show abstract

“…Vehicle weight reduction has been recognized as a key priority for improving fuel economy and reducing CO 2 emission [1,2]. One method of weight reduction is to replace steel with lighter materials such as aluminum or magnesium alloys [3].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Weldment Properties by Hot Forming Quenching of Friction Stir Welded TWB Sheet

Kim

et al. 2014

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The purpose of this study is to improve the mechanical properties and formability of friction stir welded tailor-welded blanks (TWBs) of Al6061 alloy with a new forming method called hot forming quenching (HFQ) in which solid-solution heat-treated aluminum sheets are formed at elevated temperature. Forming and quenching during HFQ are simultaneously performed with the forming die for the solid-solution heat-treated sheet. In this study, specimens of aluminum TWBs were prepared by friction stir welding (FSW) with a butt joint. The effectiveness of FSW joining was evaluated by observation of the macrostructure for different sheet thicknesses. In order to evaluate the formability of TWBs by HFQ, a hemisphere dome stretching test of the limit dome height achieved without specimen failure was performed with various tool temperatures. A Vickers test was also performed to measure weldment hardness as a function of position. The formability and mechanical properties of products formed by HFQ are compared with those formed by conventional forming methods, demonstrating the suitability of HFQ for sheet metal forming of friction stir welded TWBs.

show abstract

Warm forming behavior of high strength aluminum alloy AA7075

Cited by 170 publications

References 9 publications

AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

Hot stamping of AA7075 aluminum sheets

Improvement of Weldment Properties by Hot Forming Quenching of Friction Stir Welded TWB Sheet

Contact Info

Product

Resources

About