Fostering deep drawability through recrystallization texture strengthening in aluminum-rich interstitial free steel

Tamboli, Rameez R.; Guennec, Benjamin; Fujiwara, Hiroshi; Ameyama, Kei; Bhattacharya, Baby; Dey, Suhash Ranjan

doi:10.1016/j.matchar.2022.112264

Cited by 5 publications

(1 citation statement)

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“…The microstructural evolution of UF340 annealed at 720 ℃ for different time is illustrated in figure 2. The average grain sizes of them are measured as 7.73 μm, 8.01 μm, 8.70 μm and 8.86 μm, respectively, which are smaller than ordinary IF steels (more than 10 μm) [10][11][12]. The average aspect ratios of the <110>//RD oriented grains in these samples are calculated as 4.46, 3.85, 2.85 and 2.52, respectively.…”

Section: Microstructure Evolutionmentioning

confidence: 88%

Microstructure and texture development during annealing in UF340

Li,

Guan,

et al. 2023

J. Phys.: Conf. Ser.

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UF340 is a new type of cold-rolled fine grain high-strength steel with excellent formability developed by Shougang Co., Ltd Company. In this paper, the formation mechanism of recrystallisation texture of UF340 during annealing at 720 °C were systematically investigated. The as-received cold rolled sheet displayed a pronounced α-fiber texture together with a weak γ-fiber texture. With increasing annealing time, recrystallization occurred in the elongated grains, γ-fiber texture grains generated and grew up gradually. The texture component of the original α-fiber grains shift toward {112} <110>, {023} <100>, {223}<352> and finally {111} <112>. High r-values of UF340 in all directions were achieved by the development of the remarkable γ-fiber texture. In addition, the r ¯ value of the annealed UF340 was as high as 1.96, and the Δr value was only 0.2. As a result, excellent deep drawability and relatively high strength of UF340 were realized simultaneously, making it one of the ideal materials for automobile outer panels.

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Section: Microstructure Evolutionmentioning

confidence: 88%