6C型碳化物的熔解量,影響最終碳化物的尺寸。 淬火溫度為1190℃時,M6C型碳化物充分熔解,回火過程碳化物均勻彌散析出。"/>

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M42熱處理中淬火溫度對碳化物轉(zhuǎn)變機制的影響
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北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院,河冶科技股份有限公司,河冶科技股份有限公司,北京科技大學(xué)新材料技術(shù)研究院

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國家高技術(shù)研究發(fā)展計劃(863計劃)(項目號2012AA03A509)


Effect of Quenching Temperature on Transform Mechanism of Carbides of M42
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Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,HEYE Special Steel Co,Ltd,HEYE Special Steel Co,Ltd,Institute for Advanced Materials and Technology,University of Science and Technology Beijing

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    摘要:

    以精鍛M42噴射成形高速鋼為原料,通過熱處理正交試驗,優(yōu)化了材料熱處理工藝,并分析了不同熱處理制度下材料顯微組織、硬度、抗彎強度及碳化物的演變規(guī)律。結(jié)果顯示,最佳熱處理工藝為：淬火保溫溫度1180℃；回火溫度540℃；回火3次,每次1小時。該工藝下,M42洛氏硬度達(dá)到67.2 HRC,抗彎強度達(dá)到3115MPa。淬火保溫溫度通過控制M6C型碳化物的熔解量,影響最終碳化物的尺寸。 淬火溫度為1190℃時,M6C型碳化物充分熔解,回火過程碳化物均勻彌散析出。

    Abstract:

    With the raw material of the precision forging M42 spray formed high speed steel, the orthogonal experiment under different parameters was used to optimize the technology of heat treatment and analyze the material’s microstructure, hardness, and flexural strength and the evolution law of carbide in different heat treatment systems. Results show that the best preservation temperature for quenching was 1180℃, and the temperature for temper which should be repeated 3 times and 1h for each time was 540℃. In this system, Rockwell hardness of M42 can reach to 67.2HRC, while flexural strength can be 315MPa.During the process of heat treatment, M6C carbide was largely affected by the change of quenching preservation temperature. When the quenching temperature was 1190℃, M6C carbide fully melted, and dispersedly separated after tempering.

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劉博文,路新,皮自強,賈成廠,鄭偉,吳立志,張一帆. M42熱處理中淬火溫度對碳化物轉(zhuǎn)變機制的影響[J].稀有金屬材料與工程,2017,46(3):829~834.[Liu Bowen, Lu Xin, Pi Ziqiang, Jia Chengchang, Zheng Wei, Wu Lizhi, Zhang Yifan. Effect of Quenching Temperature on Transform Mechanism of Carbides of M42[J]. Rare Metal Materials and Engineering,2017,46(3):829~834.]
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  • 收稿日期:2015-12-15
  • 最后修改日期:2016-01-12
  • 錄用日期:2016-02-24
  • 在線發(fā)布日期: 2017-05-18
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