Casting behavior of titanium alloys in a centrifugal casting machine
Casting behavior of titanium alloys in a centrifugal casting machine
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DOI：
10.1016/s0142-9612(02)00583-5
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发表时间：
2003-05-01
期刊：
影响因子：
14
通讯作者：
Okabe, T
中科院分区：
文献类型：
--
作者：
Watanabe, K;Miyakawa, O;Okabe, T
由于牙科铸件需要高精度地复制复杂的形状，因此本研究检查了一些商业钛合金和实验钛铜合金填充模具腔体的情况。所检查的金属是三种类型的商业牙科钛[商业纯钛（以下记作CP-Ti）、Ti-6Al-4V（T64）和Ti-6Al-7 Nb（T67）]，以及实验钛-铜合金[3%、5%和10%Cu（质量%）]。在以非常薄的穿孔板图案制备并在离心铸造机中铸造的铸件中评估填充型腔的体积百分比。还使用所谓的“示踪元素技术”检查了熔融金属的流动行为。“填充空腔的CP-Ti和所有Ti-Cu合金的量是相似的;填充空腔的T64和T67较少。然而，由于与其他金属相比流动性较低，Ti-CU合金未能到达空腔的末端。用专门设计的穿孔板制备的模具在区分所测试的金属的流动行为方面是有效的。本技术还揭示了具有宽凝固范围的更粘稠的Ti-Cu合金不能顺序地流动到腔的端部。(C)2003爱思唯尔科技有限公司版权所有。
Since dental casting requires replication of complex shapes with great accuracy, this Study examined how well some commercial titanium alloys and experimental titanium-copper alloys filled a mold cavity. The metals examined were three types of commercial dental titanium [commercially pure titanium (hereinafter noted as CP-Ti), Ti-6A1-4V (T64) and Ti-6A1-7Nb (T67)], and experimental titanium-copper alloys [3%, 5% and 10% Cu (mass %)]. The volume percentage filling the cavity was evaluated in castings prepared in a very thin perforated sheet pattern and cast in a centrifugal casting machine. The flow behavior of the molten metal was also examined using a so-called "tracer element technique." The amounts of CP-Ti and all the Ti-CU alloys filling the cavity were similar; less T64 and T67 filled the cavity. However, the Ti-CU alloys failed to reach the end of the cavities due to a lower fluidity compared to the other metals. A mold prepared with specially designed perforated sheets was effective at differentiating the flow behavior of the metals tested. The present technique also revealed that the more viscous Ti-Cu alloys with a wide freezing range failed to sequentially flow to the end of the cavity. (C) 2003 Elsevier Science Ltd. All rights reserved.