试验结果表明，分级时效工艺在提高合金机械性能的同时，还能使合金抗应力腐蚀性能得到明显改善。
Experimental results show that stepped aging process not only enhances mechanical properties but also improves resistance against stress corrosion of the alloy.
分级时效处理，低温下先让合金内部的宏观应力松弛，再在较高温度下时效，可有效地避免棒材纵向开裂。
However, stepped aging, which relaxes internal macro-stress under lower temperature then ages under higher temperature, can avoid longitudinal cracks effectively.
结果表明，NBC合金经过分级时效处理后，耐磨性、 耐腐蚀性和电导率有所提高，而显微硬度无明显变化；
The results show that multi-stage aging treatment can increase wear resistance, corrosion resistance and electrical properties of NBC alloy, but microhardness has not changing apparently.
合金采用分级时效工艺处理后，可得到高的硬度(HV171)和较高的导电率(5 9.5 %IACS)。
When the grading aging is adopted, the high hardness (HV171) and electrical conductivity (59.5%iacs) will be obtained.
研究表明，对铝锂合金接头进行分级固溶时效处理、可以有效提高强度，改善塑性。
The result shows that this method can increase not only thetensile strength but also the ductility of the alloy 2091 welded joint.
研究表明，对铝锂合金接头进行分级固溶时效处理、可以有效提高强度，改善塑性。
The result shows that this method can increase not only thetensile strength but also the ductility of the alloy 2091 welded joint.
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