【摘要】：目的研究RE-N-C-S-V-Nb多元共滲H13鋼的高溫耐磨性,為避免鋁型材擠壓模具的早期磨損失效提供表面強(qiáng)化的新工藝。方法把多元共滲試樣及對(duì)比試樣進(jìn)行高溫摩擦磨損實(shí)驗(yàn),然后利用金相顯微鏡、掃描電鏡、能譜分析儀、X射線(xiàn)衍射儀等設(shè)備進(jìn)行檢測(cè)分析。結(jié)果淬火試樣和軟氮化試樣均存在較嚴(yán)重的磨粒磨損和粘著磨損現(xiàn)象,滲層有微裂紋,高溫摩擦系數(shù)曲線(xiàn)有明顯的波動(dòng)和峰值,磨損率分別為21.20×10-13,11.30×10-13m3/(N·m),在560℃保溫4 h后的顯微硬度分別為584,1018HV0.1。RE-N-C-S-V-Nb多元共滲試樣以微量氧化磨損和微量粘著磨損形式出現(xiàn),滲層無(wú)裂紋,高溫摩擦系數(shù)曲線(xiàn)平緩,磨損率僅為2.96×10-13m3/(N·m),顯微硬度高達(dá)1334HV0.1。結(jié)論 RE-N-C-S-V-Nb多元共滲H13鋼具有較強(qiáng)的高溫耐磨性。
[Abstract]:The high temperature wear resistance of RE-N-C-S-V-Nb multicomponent co-infiltrated H13 steel was studied in order to provide a new surface strengthening process to avoid the early wear failure of aluminum extrusion die. Methods the high temperature friction and wear tests were carried out on the multicomponent co-infiltrated and contrasted samples, and then analyzed by means of metallographic microscope, scanning electron microscope, energy dispersive analyzer and X-ray diffractometer. Results there were serious abrasive wear and adhesion wear phenomena in both quenched and soft nitrided samples. There were microcracks in infiltration layer and obvious fluctuation and peak value of friction coefficient curve at high temperature. The microhardness of the specimens with wear rate of 21.20 脳 10-13 + 11.30 脳 10-13m3/ (N m), at 560 鈩，

本文編號(hào)：2187569