拉伸结果表明，热暴露后试样的室温拉伸塑性普遍明显下降。

Tensile results showed that the tensile elongation of the post-exposed specimens were obviously lower.

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用原位合成法制备了纳米颗粒增强铝基复合材料，研究了复合材料微观组织、室温拉伸强度、塑性，并与基体合金进行比较。

Microstructure, plasticity and mechanical properties at room temperature of the nano particle reinforcement aluminum matrix composites fabricated by in situ reaction and matrix alloy were studied.

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室温和高温拉伸强度随锻造火次的增加呈现先减少后增加的趋势，塑性则先增加后减小。

At room temperature and high temperature the tensile strength of the forging decreases firstly and then increases while the ductility changes on the contrary.

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