Experimental Study on the Perforation Process of 5754-H111 and 6082-T6 Aluminium Plates Subjected to Normal Impact by Conical, Hemispherical and Blunt Projectiles

Rodríguez-Millán, M.; Vaz-Romero, A.; Rusinek, Alexis; Rodríguez-Martínez, J.A.; Árias, A.

doi:10.1007/s11340-013-9829-z

Cited by 62 publications

(36 citation statements)

References 54 publications

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“…Low-rate compression Figure 1a shows the representative quasi-static compression stress-strain curves for Haynes 282. The rate sensitivity is negligible within this range of strain rates, which is a common characteristic of other metallic alloys [21]. Figure 1b compares the quasi-static behavior of Inconel 718, obtained from literature, and the experimental results in the present work for Haynes 282.…”

Section: Quasi-static Compression Testingsupporting

confidence: 61%

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Rodríguez-Millán

Díaz-Álvarez

Bernier

et al. 2017

Metals

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Abstract:Ni-based superalloys are extensively used in high-responsibility applications in components of aerospace engines and gas turbines with high temperature service lives. The wrought, γ'-strengthened superalloy Haynes 282 has been recently developed for applications similar to other common superalloys, such as Waspaloy or Inconel 718, with improved creep behavior, thermal stability, and fabrication ability. Despite the potential of Haynes 282, there are still important gaps in the knowledge of the mechanical behavior of this alloy. In fact, it was not possible to find information concerning the mechanical behavior of the alloy under impulsive loading. This paper focuses on the mechanical characterization of the Haynes 282 at strain rates ranging from 0.1 to 2800 s −1 and high temperatures ranging from 293 to 523 K using Hopkinson bar compression tests. The experimental results from the thermo-mechanical characterization allowed for calibration of the Johnson-Cook model widely used in modeling metallic alloy's responses under dynamic loading. Moreover, the behavior of Haynes 282 was compared to that reported for Inconel 718, and the results were used to successfully model the orthogonal cutting of Haynes 282, being a typical case of dynamic loading requiring previous characterization of the alloy.

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Section: Quasi-static Compression Testingsupporting

confidence: 61%

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Rodríguez-Millán

Díaz-Álvarez

Bernier

et al. 2017

Metals

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“…However, for the aluminum alloys studied, higher differences of Lode parameter and stress triaxiality are found in moderate/high hardening materials. From experimental studies [20,21], the following features of the alloys used in this work can be stated: AA 5754-H111 has low strength/moderate hardening, AA 6082-T6 has moderate strength/low hardening, and AA 2024-T351 has the high strength/high hardening. Barsoum et al [10] concluded that the sensitivity to the Lode parameter increases with higher material yield strength accompanied with a decrease in hardening.…”

Section: Resultsmentioning

confidence: 96%

“…The second alloy shows largely different mechanical response with high initial yield stress, low strain hardening, and limited ductility. The third of them shows greater ductility and greater initial yield stress [20,21].…”

Section: Discussionmentioning

confidence: 99%

“…The density of the material is denoted by ρ and C p is the specific heat at constant pressure. The constants of the Johnson-Cook model for aluminum alloys have been obtained from recent works by the authors [20,21] and are provided in Table 2 with other physical properties. The numerical model presented here is developed to identify the stress state in the combined tension-torsion tests and to understand the failure mechanisms associated.…”

Section: Thermoviscoplastic Behaviormentioning

confidence: 99%

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Influence of Stress State on the Mechanical Impact and Deformation Behaviors of Aluminum Alloys

Rodríguez-Millán

Garcia‐Gonzalez

Rusinek

et al. 2018

Metals

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Under impact loading conditions, the stress state derived from the contact between the projectile and the target, as well as from the subsequent mechanical waves, is a variable of great interest. The geometry of the projectile plays a dertermining role in the resulting stress state in the targeted structure. In this regard, different stress states lead to different failure modes. In this work, we analyze the influence of the stress state on the deformation and failure behaviors of three aluminum alloys that are commonly used in the aeronautical, naval, and automotive industries. To this purpose, tension-torsion tests are performed covering a wide range of stress triaxialities and Lode parameters. Secondly, the observations from these static tests are compared to failure mode of the same materials at high impact velocities tests with the aim of analysing the role of stress state and strain rate in the mechanical response of the aluminum plates. Experimental impacts are conducted with different projectile geometries to allow for the analysis of stress states influence. In addition, these experiments are simulated by using finite element models to evaluate the predictive capability of three failure criteria: critical plastic deformation, Johnson-Cook, and Bai-Wierzbicki.

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“…Heating rate and cooling rate are also critical parameters for the HFQ® process and should be controlled accurately to maintain a supersaturated solid solution without grain degradation in a specimen. Aluminium alloy 6082-T6, which is extensively used in the automotive industry [31], was used as the sample material to carry out the investigation. The specimen was heated to the solution heat treatment temperature 535°C [32] at a heating rate of 30°C/s, soaked for 1 min and then cooled to a designated temperature in the range of 370-510°C at a cooling rate of 100°C/s [2].…”

Section: The Principles Of the Experimental Designmentioning

confidence: 99%

Development of a New Biaxial Testing System for Generating Forming Limit Diagrams for Sheet Metals Under Hot Stamping Conditions

Shao

Lin

et al. 2016

Exp Mech

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Conventional experimental approaches used to generate forming limit diagrams (FLDs) for sheet metals at different linear strain paths are not applicable to hot stamping and cold die quenching processes because cooling occurs prior to deformation and consistent values of heating rate, cooling rate, deformation temperature and strain rate are not easy to obtain. A novel biaxial testing system for use in a Gleeble testing machine has been adopted to generate forming limits of sheet metals, including aluminium alloys, magnesium alloys and boron steel, under practical hot stamping conditions in which heating and cooling occur. For example, the soaking temperature is about 900°C and the deformation temperature range is 550-850°C for boron steel [1] and the soaking temperature is about 535°C and the deformation temperature range is 370-510°C for AA6082 [2]. Resistance heating and air cooling were introduced in this pioneering system and the thermal analysis of different heating and cooling strategies was investigated based on a type of cruciform specimen. FE models with a UAMP subroutine were used to predict temperature fields on a specimen in ABAQUS 6.12. Digital image correlation (DIC) system was used to record strain fields of a specimen by capturing images throughout the deformation history and its postprocessing software ARAMIS was used to determine forming limits according to ISO standards embedded in the software. Heating and cooling strategies were determined after the analysis. Preliminary results of forming limit curves at the designated temperatures are presented in order to verify the feasibility of this new method.

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Experimental Study on the Perforation Process of 5754-H111 and 6082-T6 Aluminium Plates Subjected to Normal Impact by Conical, Hemispherical and Blunt Projectiles

Cited by 62 publications

References 54 publications

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Thermo-Viscoplastic Behavior of Ni-Based Superalloy Haynes 282 and Its Application to Machining Simulation

Influence of Stress State on the Mechanical Impact and Deformation Behaviors of Aluminum Alloys

Development of a New Biaxial Testing System for Generating Forming Limit Diagrams for Sheet Metals Under Hot Stamping Conditions

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