INVESTIGATION OF THE EFFECT OF TIME AND TEMPERATURE OF PLASMA NITRIDING ON THE MICROSTRUCTURE AND GROWTH OF NITRIDED LAYER IN HOT WORKING TOOL STEEL AISI H11 AND PLASTIC INJECTION MOULD STEEL AISI P20

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NAYEBPASHAEE N.; MADANIPOUR H.; SOLTANIEH M.; KHEYRANDISH SH.; AGHAJANI H.

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Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2012 | Volume:- | Issue:16 Page(s): 19-31

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Title

INVESTIGATION OF THE EFFECT OF TIME AND TEMPERATURE OF PLASMA NITRIDING ON THE MICROSTRUCTURE AND GROWTH OF NITRIDED LAYER IN HOT WORKING TOOL STEEL AISI H11 AND PLASTIC INJECTION MOULD STEEL AISI P20

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Keywords

PLASMA NITRIDINGQ3

HOT WORK TOOL STEEL AISI H11Q3

PLASTIC MOULD STEEL AISI P20Q3

NITRIDEQ3

Abstract

In this study, pulsed PLASMA NITRIDING treatment was performed on HOT WORK TOOL STEEL AISI H11 samples and PLASTIC MOULD STEEL AISI P20 samples at different process temperatures of 500oC and 550oC for 5 and 10 h in gas mixture of 75% N2 - 25% H2. Diffusion zones and compound layers were studied by optical and scanning electron microscopy and the surface phases were determined by X-ray diffraction analysis. Moreover, micro hardness changes from surface to core of the samples were determined. Results have shown that, at any specific PLASMA NITRIDING temperature and time, due to the microstructure and appropriate paths for diffusing of nitrogen in AISI H11 in comparison with AISI P20, the diffusion and compound layers of AISI H11 are thicker than that of AISIP20. Regarding the results of EDS, upward diffusion of carbon occurred during the ion nitriding of AISI P20, but EDS analysis of diffusion zone of AISI H11 does not show carbon. XRD results have shown that nitriding layer in AISI H11 iscomposed of g-nitride and e-nitride, while e-nitride was the most forming phase in AISI P20 at all the process parameters. The results of micro hardness profiles at the same depth, have shown that AISI H11 is harder than AISI P20.

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APA: Copy

NAYEBPASHAEE, N., MADANIPOUR, H., SOLTANIEH, M., KHEYRANDISH, SH., & AGHAJANI, H.. (2012). INVESTIGATION OF THE EFFECT OF TIME AND TEMPERATURE OF PLASMA NITRIDING ON THE MICROSTRUCTURE AND GROWTH OF NITRIDED LAYER IN HOT WORKING TOOL STEEL AISI H11 AND PLASTIC INJECTION MOULD STEEL AISI P20. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, -(16), 19-31. SID. https://sid.ir/paper/120965/en

Vancouver: Copy

NAYEBPASHAEE N., MADANIPOUR H., SOLTANIEH M., KHEYRANDISH SH., AGHAJANI H.. INVESTIGATION OF THE EFFECT OF TIME AND TEMPERATURE OF PLASMA NITRIDING ON THE MICROSTRUCTURE AND GROWTH OF NITRIDED LAYER IN HOT WORKING TOOL STEEL AISI H11 AND PLASTIC INJECTION MOULD STEEL AISI P20. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2012;-(16):19-31. Available from: https://sid.ir/paper/120965/en

IEEE: Copy

N. NAYEBPASHAEE, H. MADANIPOUR, M. SOLTANIEH, SH. KHEYRANDISH, and H. AGHAJANI, “INVESTIGATION OF THE EFFECT OF TIME AND TEMPERATURE OF PLASMA NITRIDING ON THE MICROSTRUCTURE AND GROWTH OF NITRIDED LAYER IN HOT WORKING TOOL STEEL AISI H11 AND PLASTIC INJECTION MOULD STEEL AISI P20,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. -, no. 16, pp. 19–31, 2012, [Online]. Available: https://sid.ir/paper/120965/en

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