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发明授权
CN105838922B 一种航空用热强钛合金铸锭及其制备方法 有权

一种航空用热强钛合金铸锭及其制备方法
摘要：
本发明公开了一种航空用热强钛合金铸锭，其各元素重量百分比：6.2％～7.3％Al，0.4％～1.0％Mo，3.5％～4.5％Zr，0.5％～1.5％Nb，2.0％～3.0％Sn，0.1％～0.25％Si，0.04％～0.15％O，0.05％～0.14％C，余量为Ti，以上组分重量百分比之和为100％。本发明还公开了上述铸锭的制备方法。本发明通过改变合金元素的添加方式来提高大型铸锭的成分均匀性，成功突破了成分均匀性控制技术；同时在熔炼过程中，通过控制电流来控制熔炼速度，以达到均匀化成分的目的，有效的解决了采用常规方法熔炼WSTi62411SC钛合金易产生铝偏析和钼难熔块等冶金缺陷的问题。
摘要（英）：

The invention discloses a heat strong titanium alloy ingot. The heat strong titanium alloy ingot includes, by weight percentage, 6.2%-7.3% of Al, 0.4%-1.0% of Mo, 3.5%-4.5% of Zr, 0.5%-1.5% of Nb, 2.0%-3.0% of Sn, 0.1%-0.25% of Si, 0.04%-0.15% of O, 0.05%-0.14% of C and the balance Ti, and the sum of the weight percentages of the components is 100%. The invention further discloses a manufacturing method of the ingot. The component uniformity of the large ingot is improved by changing an adding manner of alloy elements, and a component uniformity control technology is successfully broken through; and meanwhile in the smelting process, the smelting speed is controlled by controlling current, the purpose of homogenizing the components is achieved, and the problem that when a conventional method is adopted for smelting WSTi62411SC titanium alloys, metallurgical defects that aluminum segregation exists and a molybdenum block is difficult to smelt are liable to be generated is effectively solved.

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