Tungsten, molybdenum and cobalt were co-diffused into the surface of ingot, 20 steel, 45 steel and T8 steel by a double glow plasma surface alloying technique. Surface alloyed layers formed on ingot and 20 steel are composed of α -Fe +(Fe,Co)7(W, Mo)6, which possess the same strong age-hardening ability as the metallurgical age-hardened high speed steel, the maximum hardness can reach 1100 HV0.025 after ageing treatment. Surface alloyed layers formed on 45steel and T8 steel are composed of M6C, hardness of which are over 1100-1400 HV0.025. Alloyed layers formed on ingot and 20 steel possess good toughness. Alloyed layer of carbide type exhibits slightly brittleness.
参考文献
| [1] | J R Chen;Z H Li .Age-hardened Tool Steel[J].Materials for Mechanical Engineering,1986,10(06):20-25. |
| [2] | Y K Deng;J R Chen;S Z Wang.High Speed Tool Steel[M].北京:冶金工业出版社,2002:1-572. |
| [3] | Z H Li;X P Liu;Y Gao et al.Surface Alloying Process of FeCoWMo Age-hardened Alloy (Ⅰ)[J].Journal Chin Non-ferrous Metal,1999,9:790-793. |
| [4] | Z H Li;X P Liu;Y Gao et al.Age-hardening Property of Fe-Co-W-Mo Surface Age-hardened Alloy (Ⅱ)[J].Journal Chin Non-ferrous Metal,2000,10:51-54. |
| [5] | Z Xu .[P].US Patent,No.4,520,268,1985. |
| [6] | Z H Li;X P Liu;J X Zhao et al.Age-hardening of Surface Age High Speed Steel on High Carbon Steel afterPlasma Decarbonizing[J].Surface and Coatings Technology,2000,00-00:1-3. |
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