Shock wave study of precipitation hardening of beryllium copper

G. Hillel; L. Meshi; S. Shimon; S. Kalabukhov; N. Frage; E. B. Zaretsky

doi:10.1016/j.msea.2022.142599

Shock wave study of precipitation hardening of beryllium copper

G. Hillel, L. Meshi, S. Shimon, S. Kalabukhov, N. Frage, E. B. Zaretsky

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Based on three series of planar impact tests performed on beryllium copper samples, having thickness 0.25–6 mm, individual contributions of beryllium clusters (in the as quenched supersaturated solid solution), Guinier-Preston zones (GP, formed following ageing at 300°C for 26 min) and metastable γ" precipitates (crystallizing after 400 min ageing at 300°C) to the strength of alloy were quantified along with corresponding activation volumes. These data being coupled with Transmission Electron Microscopy evaluation of geometry and statistics of GP and γ" precipitates, made determination of the resistance τ_p to dislocation motion (Peierls stress) of the lattices of these particles possible. The great difference between values measured in these two cases, namely 3.7 GPa for GP and 1.4 GPa for the γ" precipitates may be considered as an additional confirmation of the fact that in these two cases the strengthening occurs due to different phases.

Original language	English
Article number	142599
Journal	Materials Science and Engineering: A
Volume	834
DOIs	https://doi.org/10.1016/j.msea.2022.142599
State	Published - 17 Feb 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Funding

Financial supports from the Israel Science Foundation (grant 441/18) to E.B. Zaretsky and N. Frage, and the Israeli Ministry of Defense (grant 8757643 ) to E.B. Zaretsky are gratefully acknowledged.

Funders	Funder number
Israel Science Foundation	441/18
Ministry of Defense	8757643

Keywords

Beryllium bronze
Planar impact testing
Precipitate strength
TEM

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10.1016/j.msea.2022.142599

Cite this

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title = "Shock wave study of precipitation hardening of beryllium copper",

abstract = "Based on three series of planar impact tests performed on beryllium copper samples, having thickness 0.25–6 mm, individual contributions of beryllium clusters (in the as quenched supersaturated solid solution), Guinier-Preston zones (GP, formed following ageing at 300°C for 26 min) and metastable γ{"} precipitates (crystallizing after 400 min ageing at 300°C) to the strength of alloy were quantified along with corresponding activation volumes. These data being coupled with Transmission Electron Microscopy evaluation of geometry and statistics of GP and γ{"} precipitates, made determination of the resistance τp to dislocation motion (Peierls stress) of the lattices of these particles possible. The great difference between values measured in these two cases, namely 3.7 GPa for GP and 1.4 GPa for the γ{"} precipitates may be considered as an additional confirmation of the fact that in these two cases the strengthening occurs due to different phases.",

keywords = "Beryllium bronze, Planar impact testing, Precipitate strength, TEM",

author = "G. Hillel and L. Meshi and S. Shimon and S. Kalabukhov and N. Frage and Zaretsky, {E. B.}",

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AU - Hillel, G.

AU - Meshi, L.

AU - Shimon, S.

AU - Kalabukhov, S.

AU - Frage, N.

AU - Zaretsky, E. B.

PY - 2022/2/17

Y1 - 2022/2/17

N2 - Based on three series of planar impact tests performed on beryllium copper samples, having thickness 0.25–6 mm, individual contributions of beryllium clusters (in the as quenched supersaturated solid solution), Guinier-Preston zones (GP, formed following ageing at 300°C for 26 min) and metastable γ" precipitates (crystallizing after 400 min ageing at 300°C) to the strength of alloy were quantified along with corresponding activation volumes. These data being coupled with Transmission Electron Microscopy evaluation of geometry and statistics of GP and γ" precipitates, made determination of the resistance τp to dislocation motion (Peierls stress) of the lattices of these particles possible. The great difference between values measured in these two cases, namely 3.7 GPa for GP and 1.4 GPa for the γ" precipitates may be considered as an additional confirmation of the fact that in these two cases the strengthening occurs due to different phases.

AB - Based on three series of planar impact tests performed on beryllium copper samples, having thickness 0.25–6 mm, individual contributions of beryllium clusters (in the as quenched supersaturated solid solution), Guinier-Preston zones (GP, formed following ageing at 300°C for 26 min) and metastable γ" precipitates (crystallizing after 400 min ageing at 300°C) to the strength of alloy were quantified along with corresponding activation volumes. These data being coupled with Transmission Electron Microscopy evaluation of geometry and statistics of GP and γ" precipitates, made determination of the resistance τp to dislocation motion (Peierls stress) of the lattices of these particles possible. The great difference between values measured in these two cases, namely 3.7 GPa for GP and 1.4 GPa for the γ" precipitates may be considered as an additional confirmation of the fact that in these two cases the strengthening occurs due to different phases.

KW - Beryllium bronze

KW - Planar impact testing

KW - Precipitate strength

KW - TEM

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SN - 0921-5093

VL - 834

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 142599

ER -

Shock wave study of precipitation hardening of beryllium copper

Abstract

Bibliographical note

Funding

Keywords

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