| 含磷高强IF钢中FeTiP相的脱溶及硬化现象 |
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| 引用本文： | 熊道礼,毛卫民.含磷高强IF钢中FeTiP相的脱溶及硬化现象[J].北京科技大学学报,2000,22(4):350-353. |
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| 作者姓名： | 熊道礼 毛卫民 |
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| 作者单位： | 北京科技大学材料科学与工程学院, 北京 100083 |
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| 基金项目： | 国家科技攻关项目;95-527-01-01-05; |
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| 摘 要： | 分析含磷高强ＩＦ钢中ＦｅＴｉＰ相的脱溶行为及对硬度的影响，发现含磷ＩＦ钢的时效硬化现象，实验表明，５５０℃时效时硬化效果比较明显。电镜和能谱分析表明大量细小的ＦｅＴｉＰ相脱溶是产生硬化现象的重要原因。７５０℃时效时，ＦｅＴｉＰ相中Ｆｅ：Ｔｉ：Ｐ（原子比）并不严格地符合１：１：１的比较，且在晶界及晶内均有析出，在超低碳高纯净微合金钢中，如ＦｅＴｉＰ相等非碳氮化合物导致的硬化现象值得引起重视。
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| 关 键 词： | 时效 FeTiP相 脱溶 含磷高强IF钢 硬化 |
| 修稿时间： | 1999年1月11日 |
Precipitation Hardening of FeTiP Phase in P-added High Strength IF Steel |
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| XIONG Daoli,MAO Weimin.Precipitation Hardening of FeTiP Phase in P-added High Strength IF Steel[J].Journal of University of Science and Technology Beijing,2000,22(4):350-353. |
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| Authors: | XIONG Daoli MAO Weimin |
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| Abstract: | The precipitation behavior
of FeTiP phase in P-added high strength IF steel, as well as its influence
on the hardness were analyzed. The precipitation hardening effect in P-
added IF steel was found. The experiment demonstrates that the hardening
effect is more obvious during the aging at 550℃. The key reason of the
hardening is the fine precipitation of FeTiP phase, which precipitates
not only on the grain boundaries but also inside the grains. The atom
ratio of Fe:Ti:P of FeTiP phase is not the exact ratio of 1:1:1 during
the aging at 750℃. It is believed that the hardening effect induced by
non-carbontrides e. g. FeTiP in high purity and ultra-low carbon micro-
alloyed steel should be investigated further |
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| Keywords: | precipitation hardening aging FeTiP phase IF steel |
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