| Fe-Mo-B预合金粉对温压铁基材料烧结硬化性能的影响 |
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| 引用本文： | 李艳萍,胡学晟,果世驹.Fe-Mo-B预合金粉对温压铁基材料烧结硬化性能的影响[J].机械工程材料,2005,29(10):7-9,49. |
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| 作者姓名： | 李艳萍 胡学晟 果世驹 |
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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863计划资助项目（2001AA337010） |
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| 摘 要： | 研究了Fe-Mo-B预合金粉的含量对温压铁基材料烧结硬化后试样的密度、尺寸精度、表观硬度和抗拉强度以及显微组织的影响。结果表明：混合粉中加入一定量的Fe-Mo-B预合金粉，利用温压工艺压制成形后烧结硬化，可有效提高试样的力学性能并可获得典型贝氏体组织。烧结试样密度最高为7．49g／cm^3，其相对密度为97．74％；表观硬度最高可达44HRC，抗拉强度为1434MPa。
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| 关 键 词： | 烧结硬化 温压 铁基材料 预合金粉 |
| 文章编号： | 1000-3738（2005）10-0007-03 |
| 收稿时间： | 2004-07-29 |
| 修稿时间： | 2004-07-292004-10-12 |
Influence of the Amount of Fe-Mo-B Pre-alloyed Powder on Properties of Warm-compacted Iron-based P/M Material with Sinter Hardening Process |
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| LI Yan-ping, HU Xue-sheng, GUO Shi-ju.Influence of the Amount of Fe-Mo-B Pre-alloyed Powder on Properties of Warm-compacted Iron-based P/M Material with Sinter Hardening Process[J].Materials For Mechanical Engineering,2005,29(10):7-9,49. |
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| Authors: | LI Yan-ping HU Xue-sheng GUO Shi-ju |
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| Affiliation: | University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Powder metallurgy parts with high strength and apparent hardness can be produced through one step of sintering process. The influence of the amount of Fe-Mo-B pre-alloyed powder on the mechanical properties of warm-compacted iron-based P/M material with sinter hardening process, such as sintering-density, dimensional change rate, apparent hardness, tensile strength and microstructure, was studied. The addition of Fe-Mo-B prealloyed powder could effectively improve the mechanical properties of samples after warm compaction and sinter hardening process and typical hainite could be obtained using optimized processing parameters. The highest density reached 7. 49 g/cm^3 after sintering, with a relative density of 97. 74%; Apparent hardness could be 44 HRC and tensile strength could be 1 434 MPa. |
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| Keywords: | sinter hardening warrn-compaction iron-based material pre-alloyed powder |
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