A novel method for the spring-back analysis of a hot stamping steel

Sajan, Melwin; Amirthalingam, Murugaiyan; Chakkingal, Uday

doi:10.1016/j.jmrt.2021.01.017

Cited by 12 publications

(4 citation statements)

References 25 publications

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“…Key challenges in conventional room temperature stamping of these alloys include high springback, tool wear, and press tonnage. One approach to alleviate these issues, and the focus of the current paper, is to hot stamp 3G-AHSS using a process similar to that used for press-hardenable 22MnB5 grades [4][5][6]. Unfortunately, austenization followed by rapid quenching of 3G-AHSS to room temperature will result in a fully martensitic microstructure without the RA needed to enable the transformation induced plasticity (TRIP) effect that imparts such desirable mechanical properties to 3G-AHSS.…”

Section: Introductionmentioning

confidence: 99%

Hot-forming of a 980 MPa third generation advanced high strength steel

Midawi

Tolton

George

et al. 2023

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

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This paper considers the effect of processing route on the final microstructure hardness and tensile behavior of a 980 MPa third generation advanced high strength steel (3G-AHSS). Of particular interest is the use of a hot stamping thermal schedule that mimics a quench and partition (Q&P) heat treatment process normally used to produce Q&P grade steel sheet. For comparison purposes, samples were also produced using a quench and temper (Q&T) processing history. The experiments were performed using a Gleeble 3500 thermo-mechanical simulator system. Large coupons were produced using both processing routes from which microstructure, hardness, and tensile samples were extracted. Mechanical properties results were compared with the as-received material. Both processing routes resulted in strength levels that were close to that of the as-received material; however, the total elongation of the Q&P processed samples was 52% higher than that of the Q&T processed material.

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Section: Introductionmentioning

confidence: 99%

Hot-forming of a 980 MPa third generation advanced high strength steel

Midawi

Tolton

George

et al. 2023

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

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“…Sajan, Amirthalingam, Chakkingal presented a novel V-bending technique for effectively measuring the spring-back. Results indicate that the spring-back decreases and becomes close to zero (at a cooling rate of 20 K S −1 ), increasing the cooling rate for hot stamping steel [16]. Many scholars have a specific reference value for the research on spring-back characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of stamping parameters on stamping characteristics of SAF2205 bidirectional stainless steel

Cao

Wang

et al. 2022

SN Appl. Sci.

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SAF2205 bidirectional stainless steel is an excellent material for multiple corrugated diaphragms. It is necessary to study its stamping forming characteristics and provide a theoretical basis for stamping forming of multiple corrugated diaphragms. In this paper, the detailed V-bending process parameters are formulated. The effects of bending speed, relative fillet radius, temperature, and alignment time on spring-back behavior of SAF2205 bidirectional stainless steel are systematically studied to reveal the positive and negative spring-back mechanism. The range of process parameters suitable for stamping of SAF2205 bidirectional stainless steel was obtained. Article Highlights The detailed V-bending process parameters are formulated. The effect of SAF2205 parameters on the spring-back behavior was studied. The range of process parameters suitable for stamping of SAF2205 was obtained.

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“…It has been observed that the rate of ferrite in the material increases with the increase in temperature in locally applied heat treatments when various studies in the literature are examined. In this way, it has been observed that the amount of springback could be reduced and the formability feature could be increased [6][7][8][9][10][11][12][13][14][15][16][17][18]. During the forming of high-strength sheet metal materials at room temperature, dimensional forming errors which are called springback may also occur in addition to difficulties such as crack formation and breakage.…”

Section: Introductionmentioning

confidence: 99%

The effects of laser-assisted heat treatment on warm formability of dual-phase materials

Karaağaç

Kabakçi

Başdoğan³

2023

Ironmaking & Steelmaking

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In this study, the effects of local heat treatment using a low-power laser on the bending formability of DP800 sheet material were experimentally investigated. In the first step of the study, only the punch contact bending region of sheet metal was locally heated with a constant feed rate (1 mm s −1 ) and at different laser powers (50, 75, and 100% Watt). In the next step, the sheet material was transferred to the bending die for bending without any cooling process, and into the last stage, the sheet material was formed in different angled V-bending dies (30°, 60°, and 90°). It was observed that in heating up to 75-W power, the hardness decreased to 237 HV due to the dissolution of the martensite in the microstructure of DP material, and the springback value decreased by 39.285% due to the decrease in hardness.

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A novel method for the spring-back analysis of a hot stamping steel

Cited by 12 publications

References 25 publications

Hot-forming of a 980 MPa third generation advanced high strength steel

Hot-forming of a 980 MPa third generation advanced high strength steel

Influence of stamping parameters on stamping characteristics of SAF2205 bidirectional stainless steel

The effects of laser-assisted heat treatment on warm formability of dual-phase materials

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