The effect of yttrium oxide on microstructure, chemical composition and mechanical properties of weld metal was studied and the active mechanism of yttrium oxide was also discussed.
研究了稀土添加剂氧化钇对焊缝微观组织、化学成分以及焊缝金属力学性能的影响，并分析了氧化钇的作用机制。
The problem may be solved by using the gradient transitional layer, within which the composition and microstructure can vary gradiently, as a weld interlayer between ceramic and metal.
在陶瓷与金属间用一定厚度的成分和结构呈梯度变化的梯度过渡层作为连接二者的焊缝层，是解决陶瓷与金属连接时所存在问题的较好措施之一。
The use of high-power density laser beam to weld many alloys often leads to appreciable changes in the composition and properties of the weld metal.
高功率激光焊接合金材料时，常常导致焊缝合金元素的损失，从而影响焊缝的组织和性能。
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