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熱處理對Fe-B-C合金顯微組織和性能的影響
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國家高技術(shù)研究發(fā)展計劃(2007AA03Z510)


Effect of Heat Treatment on Microstructures and Properties of Fe-B-C Alloy
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    摘要:

    研究含1.4%~2.0%B和0.4%~0.6%C的Fe-B-C合金凝固過程和凝固組織以及不同淬火加熱溫度下的顯微組織、力學性能和耐磨性的變化規(guī)律。結(jié)果表明，F(xiàn)e-B-C合金凝固組織由Fe2B、Fe3(C, B)和Fe23(C, B)6等硼化物及馬氏體、珠光體和鐵素體等金屬基體組成。淬火后硼化物局部斷網(wǎng)且無硼化物新相出現(xiàn)，基體全部轉(zhuǎn)變成馬氏體，硬度大于55 HRC。隨淬火溫度升高，F(xiàn)e-B-C合金硬度增加，沖擊韌性變化不明顯。Fe-B-C合金在靜載銷盤磨損和動載沖擊磨損條件下，都具有優(yōu)異的耐磨性，且淬火溫度變化對耐磨性無明顯影響

    Abstract:

    The solidification process and solidification structures of Fe-B-C alloy containing 1.4%-2.0% B and 0.4%-0.6% C were researched. The change of microstructures, mechanical properties and wear resistance of the alloy at different quenching temperatures were also studied. The results show that the solidification structures of Fe-B-C alloy consist of borides such as Fe2B, Fe3(C, B) and Fe23(C,B)6 and metallic matrix such as martensite, pearlite and ferrite. The part of boride network is broken and there is no new phase after quenching. The matrix transforms into the single martensite completely and the hardness exceeds 55 HRC. The hardness of Fe-B-C alloy increases while the impact toughness has no obvious change with increase of the quenching temperature. Under the conditions of static load pin-on-disc wear and dynamic load impact wear, Fe-B-C alloy has excellent wear resistance and the quenching temperature has no marked effect on the wear resistance

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符寒光,宋緒丁,劉海明,雷永平,成小樂,邢建東.熱處理對Fe-B-C合金顯微組織和性能的影響[J].稀有金屬材料與工程,2010,39(6):1125~1128.[Fu Hanguang, Song Xuding, Liu Haiming, Lei Yongping, Cheng Xiaole, Xing Jiandong. Effect of Heat Treatment on Microstructures and Properties of Fe-B-C Alloy[J]. Rare Metal Materials and Engineering,2010,39(6):1125~1128.]
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  • 收稿日期:2009-09-01
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