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.
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.
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.
由于镁晶体为密排六方结构，镁合金的室温塑性加工能力较低，因而很有必要研究镁合金的热拉伸性能，壳形件热拉深成形及其有限元模拟，为今后镁合金塑性加工提供必要技术支持。
So it is necessary to study hot stretch properties, hot drawing of shell parts and its finite element simulation of magnesium alloys for providing technical supports of plastic processing.
由于镁晶体为密排六方结构，镁合金的室温塑性加工能力较低，因而很有必要研究镁合金的热拉伸性能，壳形件热拉深成形及其有限元模拟，为今后镁合金塑性加工提供必要技术支持。
So it is necessary to study hot stretch properties, hot drawing of shell parts and its finite element simulation of magnesium alloys for providing technical supports of plastic processing.
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