共查询到18条相似文献,搜索用时 125 毫秒
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高强高铜合金是一类具有发展潜力的功能材料。评述了几种新发展起来的高强高导铜合金的制备技术,并对其存在问题及发展趋势进行了评论。分析指出快速凝固已成为进一步改善合金化法制备高强高导铜合金综合性能的有效手段;机械合金化、定向凝固和塑性变形等复合强化方法代表着今后高强高导铜合金的发展方向,但其工艺较为复杂,生产成本较高,有待进一步研究开发。 相似文献
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快速凝固高强高导铜合金的研究现状及展望 总被引:1,自引:0,他引:1
本文综述了快速凝固高强度高导电率铜合金的研究现状 ,并对将来的发展趋势作了展望。指出 ,快速凝固铜合金的凝固过程对合金的最终显微组织结构起重要作用 ,因而 ,对其进行深入细致的研究具有重要意义。 相似文献
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快速凝固高强高导铜合金的研究现状及展望 总被引:2,自引:0,他引:2
本文综述了快速凝固高强度高导电率铜合金的研究现状 ,并对将来的发展趋势作了展望。指出 ,快速凝固铜合金的凝固过程对合金的最终显微组织结构起重要作用 ,因而 ,对其进行深入细致的研究具有重要意义。 相似文献
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Benjamin C. Church T. H. Sanders Jr. Joe K. Cochran 《Materials and Manufacturing Processes》2004,19(5):813-837
Extrusion of oxide powders allows fabrication of thin-walled metal articles to produce controlled-geometry, low-density copper alloy architectures. Shapes formed with copper oxide powders mixed with alloying oxides are reduced and sintered to produce high relative densities in the thin walls. This technology has produced square-cell honeycomb extrusions, which are being characterized for heat sink applications. This effort is to determine the bulk properties of alloys produced by this type of thermo-chemical powder processing and to explain behavior based on the final chemistry and microstructure of the alloys. Compositions investigated include Cu, Cu-Ni, Cu-Ag, W-Cu, Cu-Invar, Cu-Al2O3, and Cu-Cr alloys. Alloys have been characterized for relative density, thermal conductivity, and grain size. Mechanical properties including tensile and yield strength and elongation were measured on Cu-Ni and Cu-Ag, and the results were analyzed based on porosity and composition of the alloys. Properties were compared to alloys made through conventional processing and powder metallurgy. 相似文献
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Zr基大块非晶合金具有极大的非晶形成能力,能在较低的冷却速率(<103K/s)下用铜模铸造法制备.Zr基大块非晶合金的强度高达1.8GPa,具有高耐腐蚀性和优异的加工成形性能,在实际工程中有着广阔的应用前景.综述了Zr基大块非晶合金的制备方法、性能特点及主要应用,介绍了国内外在该领域的主要研究进展和研究动态. 相似文献