Abstract

In the present work, dependences of lamellar spacing (λ), microhardness (HV), and ultimate tensile strength (σ_UTS) on growth rate (V) were investigated in the Al–Cu–Ti (Al–33 wt % Cu–0.1 wt % Ti) eutectic alloy. For these purposes, the Al–Cu–Ti eutectic alloy was solidified at a constant temperature gradient of 6.45 K mm^–1 with a wide range of growth rates, from 8.58 to 2038.65 µm/s. Then, the values of λ, HV, and σ_UTS were measured on the directionally solidified Al–Cu–Ti specimens. The dependences of λ, HV, and σ_UTS on V in the Al–Cu–Ti eutectic alloy were experimentally obtained using regression analysis. The results obtained in the present work were compared with the similar experimental results in the literature.

中文翻译：

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生长速率对Al-Cu-Ti共晶合金共晶间距，显微硬度和极限拉伸强度的影响

摘要

在目前的工作中，研究了在Al–Cu–Ti（Al–33 wt％Cu–0.1 ）中层间距（λ），显微硬度（HV）和极限拉伸强度（_σUTS）对生长速率（V）的依赖性。wt％Ti）共晶合金。为此，Al-Cu-Ti共晶合金在6.45 K mm ^–1的恒定温度梯度下凝固，其生长速率范围从8.58至2038.65 µm / s。然后，在定向凝固的Al-Cu-Ti试样上测量λ，HV和_σUTS的值。λ，HV和_σUTS对V的依赖性使用回归分析通过实验获得了Al-Cu-Ti共晶合金中的元素。将当前工作中获得的结果与文献中类似的实验结果进行比较。