钛基合金中氩的分析探讨及应用

发布时间：2018-03-01 19:39

  本文关键词： 氩 钛基合金 氩偏析 力学性能　出处：《冶金分析》2015年03期 　论文类型：期刊论文

【摘要】：应用脉冲熔融-质谱/热导法定量分析钛基合金样中氩含量,同时分析了氩释放和氩的宏观偏析。结果表明:不同的制备工艺控制,氩含量差异较大;氩含量的增高未影响氧、氮、氢含量的明显变化,可用于指导工艺;样品中氩在低温释放,以非化合态形式存在。采用飞行时间二次离子质谱仪观察了样品中氩的微观状态,利用力学仪器对比考察了含氩1 000μg/g和1μg/g以下样品在室温、650℃及800℃下的拉伸性能。结果表明:钛基粉末冶金材料中氩质量分数可以高达0.0X%,氩在试验样中宏观偏析不严重,100μm×100μm区域的微观偏析严重。氩以非化合态单质存在于钛基合金内部,形成孔隙类缺陷,对该材料的力学性能产生不良影响。
[Abstract]:The argon content in titanium alloy samples was analyzed by pulsed melt mass spectrometry / thermal conductivity method. The results showed that the argon content was different with the control of different preparation process, and the increase of argon content had no effect on oxygen. The apparent change of nitrogen and hydrogen content can be used to guide the process. The argon in the sample is released at low temperature and exists in the form of non-combined state. The microscopic state of argon in the sample is observed by time-of-flight secondary ion mass spectrometer. The tensile properties of samples containing argon below 1 000 渭 g / g and 1 渭 g / g at room temperature of 650 鈩，

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