Experimental studies and modelling of high-velocity loaded iron-powder compacts

Gustafsson, Gustaf; Nishida, Masahiro; Häggblad, Hans‐Åke; Kato, Hidinori; Jonsén, Pär; Ogura, Takashi

doi:10.1016/j.powtec.2014.08.060

Cited by 13 publications

(11 citation statements)

References 8 publications

(19 reference statements)

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“…Babaei et al [4] utilized the gas mixture detonation method to study experimentally the HVC of aluminum powders. Gustafsson et al [26] employed a projectile accelerated inside an air gun to generate elasticwave propagation and achieved impact loading. Shoaib et al [27] incorporated a relaxation assist device into a piston die assembly to better lock the particles during the compaction process and convert the higher kinetic energy of the hammer into particle deformation.…”

Section: Introductionmentioning

confidence: 99%

A Control Method of High Impact Energy and Cosimulation in Powder High‐Velocity Compaction

You

Liu

Guan

et al. 2018

Advances in Materials Science and Engineering

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To enhance the impact energy of powder high-velocity compaction (HVC) and thus improve the green density and mechanical properties of the resulting compacts, a mechanical energy storage method using combination disc springs is proposed. e high impact energy is achieved by modifying existing equipment, and the hydraulic control system is developed to implement the automatic control of the energy produced from the disc springs. An interdisciplinary cosimulation platform is established using the ADAMS, AMESim, and LabVIEW software packages to perform the interactive control of the simulation process and the realtime feedback of the simulation results. A mechanical-hydraulic cosimulation of the energy control virtual prototype of the testing machine is conducted using this platform. e influence of the impact energy on the green density is studied according to the HVC experimental results of the iron-based powders, and then, the green compact with the higher relative density is produced. e experimental results indicate that the energy enhancement method using the combination disc springs is reasonable and that the hydraulic control scheme is reliable.

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Section: Introductionmentioning

confidence: 99%

A Control Method of High Impact Energy and Cosimulation in Powder High‐Velocity Compaction

You

Liu

Guan

et al. 2018

Advances in Materials Science and Engineering

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“…Powder metallurgy (PM) steels are widely used to make complexly shaped and high‐dimensional accuracy parts in the automotive and machinery industries due to their obvious economical and technical advantages . Specifically, Fe–C–Cu PM steel possesses a high strength, low cost, and good processibility, and has wide applications for use in PM parts .…”

Section: Introductionmentioning

confidence: 99%

A Constitutive Equation for the Flow and Densification Behaviors of Powder Metallurgy Fe-0.5C-2Cu Steel at Elevated Temperatures

Guo

et al. 2016

steel research int.

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The flow and densification behaviors of powder metallurgy (PM) Fe–0.5C–2Cu (wt%) steel are investigated by conducting isothermal hot compression tests on a Gleeble 3800 thermo‐simulator in the temperature range of 850–1000 °C, a strain rate of 0.01–10 s−1, and a compressibility of 35–65%. It is found that the true stress–strain curves obtained from the hot compression tests demonstrated the characteristics typical of persistent hardening as the gradual decrease of the stress rise. The experimental results show that the flow and densification behaviors of the PM steel are greatly affected by the deformation temperature, strain rate, and deformation amount. A constitutive equation that predicts the dynamic flow stress and relative density in hot compression of the PM steel is established. The predicted values of flow stress and relative density are in good agreement with the experimental results, which demonstrate that the proposed constitutive equation is able to well characterize the flow and densification behaviors of the PM steel at elevated temperatures. The present study can provide important and basic data for the finite element simulation of plastic working processes of the PM steel.

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“…Ultrafine metal powders are valuable materials in both manufacture and laboratory; and they are of great importance in numerous applications including chemical engineering, electronic engineering, and aeronautics and astronautics technology [1][2][3][4][5][6][7]. One way to produce ultrafine metal powder is the inert gas condensation (IGC) method.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal process on particle size distribution of ultrafine magnesium powder prepared by inert gas condensation method

Wen

2015

Powder Technology

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Experimental studies and modelling of high-velocity loaded iron-powder compacts

Cited by 13 publications

References 8 publications

A Control Method of High Impact Energy and Cosimulation in Powder High‐Velocity Compaction

A Control Method of High Impact Energy and Cosimulation in Powder High‐Velocity Compaction

A Constitutive Equation for the Flow and Densification Behaviors of Powder Metallurgy Fe-0.5C-2Cu Steel at Elevated Temperatures

Influence of thermal process on particle size distribution of ultrafine magnesium powder prepared by inert gas condensation method

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