碳氮共渗及离子氮化H13钢的抗热疲劳性能
Thermal Fatigue Resistance of Nitrocarburized and Ion Nitrided H13 Steel
摘 要
分别制备了调质、离子氮化和碳氮共渗处理的H13钢试样,借助X射线衍射仪、扫描电子显微镜和能谱仪对其渗层进行了分析,检测了不同处理后H13钢的抗热疲劳性能.结果表明:经过1 000次18 ℃700 ℃热疲劳试验后,碳氮共渗H13钢表面萌生了少量的热裂纹;而离子氮化H13钢表面的热裂纹已经形成网状,并且穿透渗氮层扩展到基体内约300 μm;经调质处理的H13钢表面的热裂纹有轻微的发展,扩展到基体内约100 μm;三种试样中碳氮共渗处理H13钢的抗热疲劳性能最好.
碳氮共渗
离子氮化
抗热疲劳性能
steel H13
nitrocarburizing
ion nitriding
thermal fatigue resistance
Abstract
The thermal fatigue resistance of ion nitrided H13 and nitrocarburized H13 was studied.The specimens were analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS).The thermal fatigue resistance was tested.The results showed that after 1 000 cycles of thermal fatigue tests at 700 ℃,the surface of nitrocarburized H13 steel exhibited a small quantity of thermal fatigue cracks,while the thermal fatigue cracks on ion nitrided H13 suface formed network,and expanded into substrate about 300 μm in depth.The thermal fatigue cracks on the original H13 surface expanded slightly and extended into matrix about 100 μm.
中图分类号 TG156.8 TG162.41
所属栏目 试验研究
基金项目 山西省青年科技研究基金资助项目(20011019);富士康科技集团合作资助项目(2005135)
收稿日期 2007/10/12
修改稿日期 2008/1/7
网络出版日期
作者单位点击查看
备注李志刚(1981-),男,安徽宿松人,硕士研究生.
引用该论文: LI Zhi-gang,HU Lan-qing,XU Bing-she. Thermal Fatigue Resistance of Nitrocarburized and Ion Nitrided H13 Steel[J]. Materials for mechancial engineering, 2008, 32(10): 7～9
李志刚,胡兰青,许并社. 碳氮共渗及离子氮化H13钢的抗热疲劳性能[J]. 机械工程材料, 2008, 32(10): 7～9
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参考文献
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【3】Wang Yucong.A study of PVD coatings and die materials for extended die-casting die life[J].Surface and Coatings Technology,1997,94/95:60-63.
【4】Jiang Wenping,Pal Molian.Nanocrystalline TiC powder alloying and glazing of H13 steel using a CO2 laser for improved life of die-casting dies[J].Surface and Coatings Technology,2001,135:139-149.
【5】Basu A,Majumdar J D,Chowdhury S G,et al.Microstructure and texture studies of gas-nitrided Cr-coating low-alloy high-carbon steel[J].Surf Coat Technol,2007,201:69-85.
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【7】赵昌盛,居建村.压铸模具钢H13的预先热处理及渗氮[J].模具材料及热处理,2002,16(11):53-55.
【8】刘建华,张瑞军,杨庆祥.热变形白口铸铁的热疲劳行为与碳化物的作用[J].热处理学报,2000,57(1):10-12.
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