Grain Refinement of Deoxidized Copper
Grain Refinement of Deoxidized Copper
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DOI：
10.1007/s11661-016-3671-8
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发表时间：
2016-08
期刊：
影响因子：
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通讯作者：
M. Balart;J. Patel;F. Gao;Z. Fan
中科院分区：
文献类型：
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作者：
M. Balart;J. Patel;F. Gao;Z. Fan
本研究报告了铜晶粒细化的现状，特别是对含 150 ppm Ag 的磷脱氧、高残留 P (DHP) 铜微合金化的晶粒细化进行了严格评估。根据文献中报道的铜晶粒尺寸测量的经验证据，在生长限制因子 (Q) 框架方面存在一些偏差，铜的晶粒尺寸测量分别添加了 0.05、0.1 和 0.5 wt% 的 Mo、In、Sn、Bi、Sb、Pb 和 Se，在纯 Ar 保护气氛和水淬火下铸造。在单独添加 0.4B 以及组合添加 0.4Zr-0.04P 和 0.4Zr-0.04P-0.015Ag 的情况下，在铜中观察到了柱状到等轴转变 (CET)，并且在之前的研究中，组合添加了 0.1Ag-0.069P（以重量百分比计）。这些硼和锆处理铸件中的 CET 归因于颗粒形态和化学的变化，同时与游离溶质类型和可用性相关。相对于银微合金化的 DHP-Cu，由于添加了 B、Mg、Ca、Zr、Ti、Mn、In、Fe 和 Zn（~0.1 wt%），没有观察到进一步的晶粒细化作用，因此不再与所研究的铸造条件相关。控制脱氧铜（特别是 DHP-Cu）晶粒尺寸的关键微合金元素是银。
This study reports the current status of grain refinement of copper accompanied in particular by a critical appraisal of grain refinement of phosphorus-deoxidized, high residual P (DHP) copper microalloyed with 150 ppm Ag. Some deviations exist in terms of the growth restriction factor (Q) framework, on the basis of empirical evidence reported in the literature for grain size measurements of copper with individual additions of 0.05, 0.1, and 0.5 wt pct of Mo, In, Sn, Bi, Sb, Pb, and Se, cast under a protective atmosphere of pure Ar and water quenching. The columnar-to-equiaxed transition (CET) has been observed in copper, with an individual addition of 0.4B and with combined additions of 0.4Zr-0.04P and 0.4Zr-0.04P-0.015Ag and, in a previous study, with combined additions of 0.1Ag-0.069P (in wt pct). CETs in these B- and Zr-treated casts have been ascribed to changes in the morphology and chemistry of particles, concurrently in association with free solute type and availability. No further grain-refining action was observed due to microalloying additions of B, Mg, Ca, Zr, Ti, Mn, In, Fe, and Zn (~0.1 wt pct) with respect to DHP-Cu microalloyed with Ag, and therefore are no longer relevant for the casting conditions studied. The critical microalloying element for grain size control in deoxidized copper and in particular DHP-Cu is Ag.