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首页> 外文期刊>Journal of Crystal Growth >Coupled growth behavior in the rapidly solidified Ti-Al peritectic alloys
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Coupled growth behavior in the rapidly solidified Ti-Al peritectic alloys

机译：快速凝固的Ti-Al包晶合金的耦合生长行为

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摘要

Laser melting technology, an ultra-high-temperature gradient direction solidification process, has been adopted on near equal atomic percent Ti-Al peritectic alloys with an effort to achieve the two-phase coupled growth structure. Both the alloy composition range and its local solidification parameters were determined by means of mathematical calculation of local solidification parameters in the melt pool. X-ray, SEM and optical microscopy techniques were carried out to investigate the microstructure and identify the phase composition. The two-phase (α and γ) coupled growth morphology under conditions of high growth velocity and high-temperature gradient was first detected in the laser resolidified Ti-Al peritectic alloys. The aluminum composition range appearing in the coupled growth of α and γ phases, lies in Ti-(51.0-54.0)at/100 Al, a little shift towards the left direction of the hypoperitectic plateau. Microstructural analysis showed that the coupled growth
机译：激光熔化技术是一种超高温梯度方向凝固工艺，已用于原子百分数几乎相等的Ti-Al包晶合金上，以期实现两相耦合生长结构。合金组成范围及其局部凝固参数都是通过熔池中局部凝固参数的数学计算确定的。进行了X射线，SEM和光学显微镜技术以研究其微观结构并鉴定相组成。首先在激光凝固的Ti-Al包晶合金中检测到了高生长速度和高温梯度条件下的两相（α和γ）耦合生长形态。在α和γ相的耦合生长中出现的铝成分范围位于/ 100 Al处的Ti-（51.0-54.0），向着包晶岩高原的左侧略有偏移。显微组织分析表明耦合生长

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