Superplastic Behavior Of Fine Grained Ti-6Al-4V
Superplastic Behavior Of Fine Grained Ti-6Al-4V
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DOI：
10.1179/mte.2006.21.2.84
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发表时间：
2006-06
影响因子：
3.1
通讯作者：
J. Escobedo;S. Patankar;D. Field;F. Froes
中科院分区：
文献类型：
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作者：
J. Escobedo;S. Patankar;D. Field;F. Froes
此外，与传统合金相比，这些合金不仅具有更高的强度，而且还具有增加的弹性模量E，这在某些情况下是非常重要的考虑因素。MEM技术通过离散的磁流体动力学细化铸锭的晶体结构、净化和增加其金属的均匀性，开发了具有金属间强化的钛合金的优点。总的来说：1）开发了一种用于离散外部磁场的MEM技术，该磁场具有沿晶锭结晶前沿沿着循环重复的磁流体动力学冲击。2)用于离散外部磁场的MEM技术保证了铸造金属的细晶结构，接近于锻造。此外，金属熔池中的循环水动力冲击保证了铸锭的高纯度和均匀性。3)MEM对熔融熔体具有循环磁流体动力学作用，可以生产具有金属间强化类型的耐热合金，保证强度为330-400 Mpa，耐热性高达750- 800 oC。
addition, these alloys, as compared with traditional alloys, possess not only higher strength but also increased modulus of elasticity E, which is a very important consideration in some cases. The MEM technology, with a discrete magnetohydrodynamic refining of the crystalline structure of ingot, purification and increase in homogeneity of its metal, develops the advantages oftitanium alloys with intermetallic strengthening. In summary: 1) A MEM technology for discrete external magnetic fields with cyclically repeated magneto-hydrodynamic shocks along the ingot crystallization front has been developed. 2) The MEM technology for discrete external magnetic fields guarantees a fine-crystalline structure of cast metal, close to a forging. In addition, the cyclic hydrodynamic shocks in molten metal pool guarantees a high purity and homogeneity of the ingot. 3) MEM with a cyclic magnetohydrodynamic action on the molten melt allows the production of heat-resistant alloys with an intermetallic type of strengthening, guaranteeing a strength of 330-400 Mpa with a heat resistance up to 750-800oC.