1·分析了7475铝合金扁锭裂纹、疏松倾向大的原因。
The reason of 7475 alloy flat ingot crackle and loose combination are analysed.
2·研究了淬火、双级时效工艺参数对7475厚板组织、性能的影响。
The influences of the quenching and dual aging process on the structure and properties of 7475 alloy plates are studied.
3·现共有50000人，在我国控制区仅有7475人，其余的生活在印控区。
There are currently 50000 people, in our controlled areas only 7475 people, and the rest living in Indian-controlled area.
4·对质点强化型的高强度7475铝合金超塑变形中显微组织变化进行了研究。
The microstructural changes of high-strength aluminum alloy 7475 in the process of superplastic deformation were systematically investigated.
5·零件变形各阶段的应变速率控制在7475合金的应变速率范围内，证明压力-时间曲线设计合理。
The strain rate of each forming stage is controlled in the range of 7475 alloy's strain rate. This shows the design of pressure-time curve is reasonable.
6·试验结果表明，该厚板具有良好的抗应力腐蚀性能，其技术指标达到美国AMS4202A《74-T7351合金厚板》标准的要求。
The test results show that the 7475-T7351 plates have good stress corrosion resistance. Their properties meet the AMS4202A《7475-T7351 alloy plate》standard.
7·通过对工业生产的7475铝合金加入不同含量的铍，研究了铍对合金的再结晶动力学及时效行为的影响。
The effect of beryllium on the recrystallization dynamics and aging properties of aluminum alloy 7475 was studied in response to various heat treatment conditions.
8·本文探索了生产74 75 合金棒材的工艺参数，着重研究了不同的淬火、人工时效制度对材料性能的影响。
Process parameters of 7475 aluminum alloy extruded bars are studied in the paper. The effect of various quenching and aging conditon on the properties of the material are emphatically discussed.