Bain strain relaxation during early stage decomposition of a hyper-eutectoid CuBe alloy

Cheong, Byung‐ki; Hara, Kazuhiro; Laughlin, David E.

doi:10.1016/0956-7151(94)90317-4

Cited by 3 publications

(1 citation statement)

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“…또한 전기저항을 이용 한 용접 산업에서는 용접 전극 등으로 사용되고 있다. [1][2][3][4][5] Cu-Be 합금을 강화시키는 방법으로는 고용강화, 가공 경 화, 결정립미세화, 시효경화, 분산강화 등을 들 수 있다. 고용강화는 합금원소가 기지 내에 고용됨에 따라 전기 전도도를 급속히 감소시킨다고 알려져 있는 반면에 시 효경화, 분산강화, 가공경화, 결정립미세화는 전기전도도 의 희생을 줄이면서 합금 강도를 증가시킨다고 알려져 있다.…”

Section: 서 론unclassified

Microstructures and Mechanical Properties of Age Hardenable Cu-2.0wt%Be Alloy for Projection Welding Electrode

김광수¹,

김진용²

2015

Korean. J. Mater. Res.

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Evaluations of the microstructure and mechanical properties of age hardenable Cu-2.0wt%Be alloy are performed in order to determine whether it can be used as a welding electrode for projection welding. The microstructure examinations, hardness measurements, and tensile tests of selective aging conditions are conducted. The results indicate that the aging treatment with the fine-grained microstructure exhibits better hardness and high tensile properties than those of the coarsegrained microstructure. The highest hardness value and high tensile strength are obtained from the aged condition of 300 o C for 360 min due to the presence of the metastable γ . precipitates on the grain boundaries. The values of the highest hardness and tensile strength are measured as 374 Hv and 1236.2 MPa, respectively. The metastable γ . precipitates are transferred to the equilibrium γ precipitates due to the over-aged treatment. The presence of the γ precipitates appears as nodule-like precipitates decorated around the grain boundaries. The welding electrode with the best aging treated condition exhibits better welding performance for electrodes than those of electrodes used previously.

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Section: 서 론unclassified