| 微量镓对磷在晶界偏聚的影响研究 |
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| 引用本文： | 何泽福,吴允建. 微量镓对磷在晶界偏聚的影响研究[J]. 重庆大学学报(自然科学版), 1988, 11(4) |
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| 作者姓名： | 何泽福 吴允建 |
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| 作者单位： | 重庆大学冶金及材料工程系(何泽福)，重庆大学冶金及材料工程系(吴允建) |
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| 摘 要： | 本文采用系列冲击试验,显微断口形貌和显微组织形貌观察,结合俄歇谱断口成分分析,研究了微量镓对中碳钢内磷在晶界偏聚的影响及其对钢的冲击性能的影响。试验结果表明,微量镓(含量在万分之几以上时)能够一定程度地阻止磷在晶界偏聚,(改变马氏体的形态)延缓回火过程;使得中碳钢不出现低温回火脆性,且具有较低的冷脆转折温度。
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| 关 键 词： | 镓 磷 晶界偏析 界面偏析 低温韧性 |
EFFECT OF MICRO-GALLIUM ON THE INTERGRANULAR SEGREGATINN OF PHOSPHORUS IN CARBON STEELS |
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| He Zefu Wu Yunjian. EFFECT OF MICRO-GALLIUM ON THE INTERGRANULAR SEGREGATINN OF PHOSPHORUS IN CARBON STEELS[J]. Journal of Chongqing University(Natural Science Edition), 1988, 11(4) |
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| Authors: | He Zefu Wu Yunjian |
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| Affiliation: | He Zefu Wu Yunjian |
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| Abstract: | The effect of small amounts of gallium on the intergranular segregation of phosphorus in carbon steels is discussed, with the help of the impact test, fracture morphology and micro-structure analyses, combined with composition analysis on the fracture surfaces by Auger electronspectrometer. The results show that gallium in the steel with a content of gallium more than ten thou-sandth can suppress, to some extent, the intergranular segregation of phosphorus and retard the tempering process. As a result, the temper embrittlement of the steel disappears and the embrittlement transition temperature declines. |
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| Keywords: | Gallium phosphorus grain boundary segregation interfacial segregation low temperature toughness. |
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