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(PDF) GAS NITRIDING OF A HOT WORK TOOL STEEL AND ITS

The effect of pulsed plasma nitriding temperature and time on the pitting corrosion behaviour of AISI H13 tool steel in 0.9% NaCl solutions was investigated by Basso et al. and they reported that (i) the pitting potential was found to be dependent on the composition, microstructure and morphology of the surface layers, (ii) the best corrosion protection was observed for samples nitrided at 480 °C and 520 Combat molten aluminum corrosion of AISI H13 steel by low Mar 05, 2019 · However, liquid nitrocarburizing of AISI H13 steel and whether this treatment can improve the corrosion resistance to molten aluminum were rarely researched. Recent works has shown that low-temperature nitriding contributes to enhanced pitting resistance and low processing temperature minimizes part dimension distortion . Therefore, low-temperatures (703/723 K/743 K) liquid

Effect of QPQ treatment on the performance for H13 die steel

surface hardness value of 1441 HV0.3 was obtained after nitriding at 565 for 150 min, which is as three times hi gh as that of untreated sample. Meanwhile the wear r esistance of H13 steel is Effect of Temperature on Microstructure, Corrosion Nov 30, 2015 · In this study, a type of hot work tool steel was modified through salt bath nitriding for 4 h at 540 and 560 °C, and post-oxidation was subsequently performed. Surface and cross-sectional hardness test results revealed that the surface hardness increased after the treatment because of the formation of compound layers and diffusion zones. Microstructures and phase analyses showed that Nanosized precipitates in H13 tool steel low temperature A comprehensive study of pulsed nitriding in AISI H13 tool steel at low temperature (400°C) is reported for several durations. X-ray diffraction results reveal that a nitrogen enriched compound ( -Fe 2-3 N, iron nitride) builds up on the surface within the first process hour despite the low process temperature.

Nitriding Metallurgy for Dummies

The salts used also donate carbon to the workpiece surface making salt bath a nitrocarburizing process. The temperature used is typical of all nitrocarburizing processes:550590 °C (10221094 °F). The advantages of salt nitriding are :Quick processing time - usually in the order of 4 hours or so to achieve Plasma Nitriding Behavior of DIN 1.2344 Hot Work Tool AISI H13 tool steel vary when one parameter changes (i.e. temperature or time), depending on the thickness of the nitrided layer and the hardness [18, 19]. However, in all of these papers, there is no comparison between the effects of parameters on the plasma nitriding behavior. The aim of this work is to study and compare Scientific Papers - Plasma Nitriding of Tool SteelsA comprehensive study of pulsed nitriding in AISI H13 tool steel at low temperature (400 °C) is reported for several durations. X-ray diffraction results reveal that a nitrogen enriched compound

The Effect of Heat Treatment Atmosphere on Hardening

studied. Samples of the H13 steel with specific sizes would be subjected to heat treatment process with dif- ferent duration time and under different atmospheric conditions. Hardness profile of each sample would then be measured. It is also of interest to investigate the dif- ference in effectiveness of the gas nitriding process onEffects of heat treatment on nitrided layer of H13 tool steelNitriding of steel should be conducted at temperature around 500C to give the highest diffusion rate of nitrogen in steel [6]. Normally, the nitrated layer should not be thicker than 0.3 mm