同时用维氏硬度计测量了合金的时效硬度变化。
The hardness was measured before and after the ageing treatment.
对不同焊接热输入下的6063铝合金焊接接头进行人工时效，分析其硬度分布和强度的变化。
Effects of artificial ageing on the hardness distributions and strength were analyzed for 6063 aluminum alloy joints welded by varying heat inputs.
用小角X射线散射研究了多级时效热处理中合金微结构的改变和硬度改变的机理。
The microstructure change and the mechanism of the change in hardness were studied by small-angle X-ray scattering.
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