Fine-Grain Tin-Phosphor Bronze Alloy Strip and A Preparation Method Thereof
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United States of America
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Dec 12, 2024
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May 16, 2024
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May 16, 2024
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Abstract
The disclosure provides a fine-grain tin-phosphor bronze alloy strip and a preparation method thereof. The fine-grain tin-phosphor bronze alloy strip comprises the following elements in percentage by mass: 4.0-10 wt % of Sn, 0.01-0.3 wt % of P and the balance of Cu and inevitable impurity elements, the average grain size of the tin-phosphor bronze alloy strip is 1-3 μm, the grain size is in normal distribution, and the standard deviation of the grain size is 0.9 μm or below; the proportion of the total low-ΣCSL grain boundary in the tin-phosphor bronze alloy strip in the whole grain boundary is 66-74%, and in the total low-ΣCSL grain boundary, the ratio range of (Σ9+Σ27)/Σ3 is 0.12-0.23:1. The fine-grain tin-phosphor bronze alloy strip of this disclosure enables a finished strip can have the tensile strength and the excellent bending performance at the same time.
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