| 稀土硅铁孕育对高铬合金白口铸铁性能的影响 |
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| 引用本文： | 姜镇崧,贾文亮,张学光. 稀土硅铁孕育对高铬合金白口铸铁性能的影响[J]. 稀土, 1997, 0(1) |
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| 作者姓名： | 姜镇崧 贾文亮 张学光 |
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| 作者单位： | 天津大学机制系 |
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| 摘 要： | 本文对稀土硅铁、钒铁、钛铁的不同加入量对高铬合金白口铸铁性能的影响进行了实验研究。结果表明，当稀土硅铁的加入量为１．２～１．５％时，冲击韧性达到最大值，硬度也有提高。稀土硅铁孕育可以显著改善碳化物的形态和分布，细化基体组织。当加入量为０．９～１．５％时，大部分碳化物断网，呈孤立状态分布。钒铁的加入量为０．２％时，即可起到明显的孕育作用，机械性能得到提高。
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| 关 键 词： | 高铬铸铁 稀土硅铁 钒铁 钛铁 冲击韧性 |
Effects of RE on Mechanical Properties of CuZnAl Shape Memory Alloys |
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| Jin Peiyu Zhang Wenqian Xiong Wei Zhao Zengqi. Effects of RE on Mechanical Properties of CuZnAl Shape Memory Alloys[J]. Chinese Rare Earths, 1997, 0(1) |
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| Authors: | Jin Peiyu Zhang Wenqian Xiong Wei Zhao Zengqi |
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| Abstract: | A comparative tensile test was made by means of the electronic tensile tester in the specimens of CuZnAl alloys with trace Y and Nd and without RE. The results show that the trace RE elements obviously improve the tensile strength and extension of the alloys , meanwhite maintain its original shape memory effect. The grain sizes were reduced a little from metallographic examination. The fracture appearances of specimens were also examined with SEM. The tough fracture and intergranular fracture was observed in the specimens with and without RE, respectively. |
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| Keywords: | CuZnAl alloy shape memory alloy rare earth |
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