ESR as a fast technique to dissolve nitrogen-rich inclusions in titanium
ESR as a fast technique to dissolve nitrogen-rich inclusions in titanium
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ESR 作为一种快速溶解钛中富氮夹杂物的技术
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
V. V. Pashinsky
中科院分区：
文献类型：
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作者：
M. Benz;P. J. Meschter;J. Nic;L. C. Perocchi;M. Gigliotti;R. S. Gilmore;V. Radchenko;A. D. Riabtsev;O. V. Tarlov;V. V. Pashinsky
富氮夹杂物可导致高应力钛合金部件的疲劳寿命降低（例如，在发电燃气涡轮机的压缩机部分、发电蒸汽涡轮机的涡轮机部分、飞机机身的机翼部分以及飞机喷气发动机的压缩机和风扇部分中发现）。 问题在于富氮夹杂物的"裂纹起始"性质，而不是系统中氮的存在本身。本文介绍了电渣重熔（ESR）作为钛及钛合金中富氮夹杂物快速溶解的替代技术的理论和实验室试验。五个变化的熔化速度，渣温和夹杂物类型进行了评价。一种变体显示内含物完全溶解。其他几种变体显示夹杂物部分溶解。观察到的动力学发生的速率比富氮夹杂物的溶解速率快100至1000倍，通过浸入液体钛。
Abstract Nitrogen-rich inclusions can lead to a reduction in fatigue life of highly stressed titanium-alloy components (found in the compressor sections of power generation gas turbines, turbine sections of power generation steam turbines, wing sections of aircraft air frames, and compressor and fan sections of aircraft jet engines, for example). It is the ”crack starting” nature of the nitrogen-rich inclusions that is the problem, not the presence of nitrogen in the system, per se. This paper covers the theory and laboratory experiments used to evaluate ESR (electro-slag refining) as an alternative technique for rapid dissolution of nitrogen-rich inclusions in titanium and titanium alloys. Five variations of melt rate, slag temperature and inclusion type were evaluated. One variant showed complete dissolution of the inclusions. Several of the other variants showed partial dissolution of the inclusions. The kinetics were observed to occur at a rate 100 to 1000 times faster than the rate of dissolution of nitrogen-rich inclusions by immersion in liquid titanium.