A new approach for evaluating sheet metal forming based on sheet drawing test. Application to TRIP 700 steel

Miguel, V.; Martínez, Alberto; Coello, J.; Avellaneda, F.J.; Calatayud, A.

doi:10.1016/j.jmatprotec.2013.04.010

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Therefore, the total energy of a forming process, U, can be considered as the energy to overcome the sum of ideal, frictional and redundant energies. This can be express as [77] U…”

Section: Effect Of Friction and Redundant Workmentioning

confidence: 99%

Physically-based modelling for sheet metal cone parts forming under blast loading

Alipour

2021

Mechanics & Industry

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Forming sheet metals under blast loading or the explosive forming technique has many advantages for productions, but it is restricted due to its accuracy. This paper introduces a novel theoretical-empirical study for explosive sheet metal forming based on the simple plasticity principles. It provides a method of producing the sheet metal cone parts forming under blast loading, including an analytical model and experimental validation. Firstly, a theoretical-empirical model for cone forming based on underwater explosion employing the impulse method is developed. The model on the whole revealed the relationships among the geometrical parameters of forming a process that is very useful to predict the certain explosive mass for complete forming a cone part. Afterward, a series of experiments are conducted to validate the developed model and also for the required modification in the solution. Comparing the theoretical-empirical solution and experimental results, the ability of the presented model for estimation of the explosive mass is demonstrated. Experimental results show that the theoretical model matched the experiments well.

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“…Therefore, the total energy of a forming process, U, can be considered as the energy to overcome the sum of ideal, frictional and redundant energies. This can be express as [77] U…”

Section: Effect Of Friction and Redundant Workmentioning

confidence: 99%

Physically-based modelling for sheet metal cone parts forming under blast loading

Alipour

2021

Mechanics & Industry

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“…The synthetics fluids reduce the cutting forces and temperature and improve the surface finishing after machining. Moreover, some of these components act in an efficient way in applications in which friction at high pressure appears [13]. Nevertheless the cost of these lubricants is much higher than traditional ones [12].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Lubrication Methods for the Machining of Titanium Alloys: An Overview

et al. 2019

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Titanium is one of the most interesting materials in modern manufacturing thanks to its good mechanical properties and light weight. These features make it very attractive for use in the aeronautical and aerospace industries. Important alloys, such as Ti6Al4V, are extensively used. Nevertheless, titanium alloys present several problems in machining processes. Their machinability is poor, affected by low thermal conductivity, which generates very high cutting temperatures and thermal gradients in the cutting tool. Lubricants and cutting fluids have traditionally been used to solve this problem. However, this option is unsustainable as such lubricants represent a risk to the environment and to the health of the operator due to their different chemical components. Therefore, novel, sustainable and green lubrication techniques are necessary. Dry machining is the most sustainable option. Nevertheless, difficult-to-machine materials like titanium alloys cannot be machined under these conditions, leading to very high cutting temperatures and excessive tool wear. This study is intended to describe, analyse and review the non-traditional lubrication techniques developed in turning, drilling and milling processes since 2015, including minimum quantity of lubricant, cryogenic lubrication, minimum quantity of cooling lubrication or high-pressure coolant. The aim is to provide a general overview of the recent advances in each technique for the main machining processes.

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“…Typical AHSS microstructures consist of mixtures of bainite (B), ferrite (F), martensite (M), and retained austenite (RA) [1]. In recent years these steels have been the subject of extensive work due to their relatively high toughness [2,3]. When AHSS are joined by friction stir welding (FSW), a precise characterization of the welded microstructures is of great importance as they account for the weld toughness [4].…”

Section: Introductionmentioning

confidence: 99%

“…When AHSS are joined by friction stir welding (FSW), a precise characterization of the welded microstructures is of great importance as they account for the weld toughness [4]. In FSW exceptionally large temperature gradients coupled with elevated plastic strains and strain rates leads to the 3 Universidad Autónoma de Nuevo León, FIME, Aeronautical Engineering, NL, México.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions

Medina¹,

Ferreira

Zambrano‐Robledo

et al. 2016

Soldag. insp.

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The present work describes the effect of FSW on the result microstructure in the stir zone (SZ), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal (BM) of a TRIP-780 steel. X-ray diffraction (XRD), optical microscopy (OM) and EBSD were used for determinations retained austenite (RA) in the SZ, It was found that the amount of RA developed in SZ was relatively large, (approximately 11% to 15%). In addition, recrystallization and the formation of a grain texture were resolved using EBSD. During FSW, the SZ experienced severe plastic deformation which lead to an increase in the temperature and consequently grain recrystallization. Moreover, it was found that the recrystallized grain structure and relatively high martensite levels developed in the SZ lead to a significant drop in the mechanical properties of the steel. In addition, microhardness profiles of the welded regions indicated that the hardness in both the SZ and TMAZ were relatively elevated confirming the development of martensite in these regions. In particular, to evaluate the mechanical strength of the weld, lap shear tensile test was conducted; exhibited the fracture zone in the SZ with shear fracture with uniformly distributed elongation shear dimples.Key-words: AHSS; TRIP steel; XRD; EBSD; FSW. Microstructural Desenvolvimento em um Aço TRIP-780 Unido por Soldagem por Atrito com Pino Não Consumível (FSW): Comparações e Avaliações Quantitativas com EBSD PrediçõesResumo: O presente trabalho descreve o efeito do processamento FSW na microestrutura resultante na zona soldada, zona termomecanicamente afetada (TMAZ), zona afetada pelo calor (ZAC) e no metal base (MB) de um aço TRIP-780. Difração de raios-X (DRX), microscopia óptica (MO) e EBSD foram utilizados para a determinação de austenita retida (RA) na SZ. Verificou-se que a quantidade de RA desenvolvida na SZ foi relativamente grande, (cerca de 11% a 15%). Além disso, a recristalização e a formação de textura de grão foram resolvidas usando EBSD. Durante friction stir welding, FSW (Soldagem por Atrito com Pino Não-consumível), a SZ experimentou severa deformação plástica que conduziu a um aumento na temperatura e, consequentemente, recristalização dos grãos. Verificou-se que a estrutura do grão recristalizado e níveis relativamente elevados de martensita desenvolvidos na SZ, conduziram a uma redução significativa nas propriedades mecânicas do aço. Além disso, os perfis de microdureza das regiões soldadas indicam que a dureza, tanto na SZ como na TMAZ foi elevada, confirmando o desenvolvimento de martensita nestas regiões. Em particular, foi visualidade na zona fundida trincas alongadas em perfil y, distribuída uniformetente.

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A new approach for evaluating sheet metal forming based on sheet drawing test. Application to TRIP 700 steel

Cited by 10 publications

References 16 publications

Physically-based modelling for sheet metal cone parts forming under blast loading

Physically-based modelling for sheet metal cone parts forming under blast loading

Sustainable Lubrication Methods for the Machining of Titanium Alloys: An Overview

Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions

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