| 快速凝固高碳铁基合金脉冲激光非平衡热处理 |
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| 引用本文： | 王华明.快速凝固高碳铁基合金脉冲激光非平衡热处理[J].材料研究学报,1996,10(2):157-160. |
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| 作者姓名： | 王华明 |
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| 作者单位： | 北京航空航天大学 |
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| 基金项目： | 国家自然科学基金;;国家教委留学回国人员科研资助 |
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| 摘 要： | 利用脉冲Ｎｄ：ＹＡＧ激光辐照对快速凝固高碳铁基合金进行非平衡相变热处理，发现在高能脉冲激光辐照时，原快速凝固共晶碳化物（Ｆｅ３Ｃ）异常迅速地石墨化，获得了含超细石墨球和既含超细石墨球又含快速凝固共晶Ｆｅ３Ｃ的两种新材料，研究表明，这种快速石墨化及上述两类新型材料的形成主要归因于脉冲激光光速辐照产生强烈周期性起伏温度场的“微退火（ｍｉｃｒｏ－ａｎｎｅａｌｉｎｇ）效应。
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| 关 键 词： | 快速凝固 脉冲激光 热处理 高碳铁基合金 |
| 收稿时间： | 1996-04-25 |
| 修稿时间： | 1996-04-25 |
NON-EQUILIBRIUM THERMAL PROCESSING OF RAPIDLY SOLIDIFIED HIGH CARBON IRON-BASE ALLOY WITH PULSED LASER RADIATION |
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| WANG HuamingBERGMANN H WCorrespondent:.NON-EQUILIBRIUM THERMAL PROCESSING OF RAPIDLY SOLIDIFIED HIGH CARBON IRON-BASE ALLOY WITH PULSED LASER RADIATION[J].Chinese Journal of Materials Research,1996,10(2):157-160. |
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| Authors: | WANG HuamingBERGMANN H WCorrespondent: |
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| Affiliation: | WANG Huaming(Beijing University of Aeronautics and Astronautics)BERGMANN H W(University of Erlangen-Nuremberg,FRG)Correspondent: (Professor. Division . Department of Materials Science and Engineering,BeijingUniversity of Aeronautics and Astronautics, |
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| Abstract: | A rapidly solidified high carbon iron-base alloy was rapidly heat treated by pulsed Nd: YAG laser irradiation. The rapidly solidified eutectic cementite (Fe3C) was rapidly graphitized during the laser scanning.As a result, a novel iron-base alloy containing ultra fine nodular graphite and the alloy containing both rapidly solidified eutectic cementite and ultrafine graphite particles were fabricated.The unusual rapidity of the graphitization of cementite and the production of the above novel alloys were primarily attributed to the micro-annealing effect of the cycling temperature fluctuations induced by the pulsed Nd:YAG laser radiation. |
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| Keywords: | rapidly solidified nonequilibrium alloy pulsed laser heat treatment |
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