H13和DIEVAR钢抗铝液熔损性能研究
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摘要
对比研究了H13钢和DIEVAR钢的抗铝液熔损性能,利用光学显微镜(OM)、扫描电镜(SEM)、EDS能谱分析等手段,对Fe-Al界面层的厚度、组织和成分进行了分析。结果表明:在熔损试验中,两种铝压铸模钢的熔损速度不同,前期DIEVAR钢的熔损速度较快,后期H13钢的熔损速度较快,总体来看,DIEVAR钢的抗熔损性能优于H13钢。Fe-Al界面层分为内层和外层,内层主要物相是FeSiAl4,外层是αbcc-(FeAlSiCrMnCu)。DIEVAR钢的Fe-Al界面层内、外层的厚度均小于H13钢的,DIEVAR钢Fe-Al界面层的厚度约为16μm,H13钢Fe-Al界面层的厚度约为25μm。
Melting loss resistance of H13 and DIEVAR die casting steels in molten aluminum was comparatively studied.The thickness,microstructure and composition of Fe-Al interfacial layer were analyzed by means of OM,SEM and EDS.The results showed that in the hot loss-melting test,the melting loss rates of the two die casting steels were different.The melting loss rate of DIEVAR steel was fast at the early stage,and H13 steel was fast at the later stage.Overall,DIEVAR steel had better melting loss resistance than H13 steel.The Fe-Al interfacial layer was divided into inner layer and outer layer,and the main phase of the inner layer was FeSiAl4,and the outer layer was αbcc-(FeAlSiCrMnCu).The thickness of the inner and outer layers of Fe-Al interfacial layer of DIEVAR steel was smaller than that of H13 steel.The thickness of Fe-Al interfacial layer of DIEVAR steel was about 16 μm,and that of H13 steel was about 25 μm.
Melting loss resistance of H13 and DIEVAR die casting steels in molten aluminum was comparatively studied.The thickness,microstructure and composition of Fe-Al interfacial layer were analyzed by means of OM,SEM and EDS.The results showed that in the hot loss-melting test,the melting loss rates of the two die casting steels were different.The melting loss rate of DIEVAR steel was fast at the early stage,and H13 steel was fast at the later stage.Overall,DIEVAR steel had better melting loss resistance than H13 steel.The Fe-Al interfacial layer was divided into inner layer and outer layer,and the main phase of the inner layer was FeSiAl4,and the outer layer was αbcc-(FeAlSiCrMnCu).The thickness of the inner and outer layers of Fe-Al interfacial layer of DIEVAR steel was smaller than that of H13 steel.The thickness of Fe-Al interfacial layer of DIEVAR steel was about 16 μm,and that of H13 steel was about 25 μm.
引文
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[3]王荣,吴晓春,闵永安.铝合金压铸模的焊合熔损现象及其预防措施[J].金属热处理,2005,30(2):68-72.
[4]闵永安.热作模具钢(H13型)表面处理及其热疲劳、热熔损性能研究[D].上海:上海大学,2005.
[5]程奎生.铸造热作模具钢耐铝热熔损性能研究[D].镇江:江苏大学,2008.
[6]罗毅,吴晓春,闵永安.蒸汽氧化处理对H13钢铝合金压铸模具熔损及疲劳性能的影响[J].金属热处理,2006,31(6):52-55.
[7]闵永安,王荣,吴晓春,等.蒸汽氧化H13钢的抗铝热熔损性能研究[J].上海金属,2004,26(3):5-9.
[8]WANG Y,LEE J W,DUH J G.Mechanical strengthening in self-lubricating CrAlN/VN multilayer coatings for improved hightemperature tribological characteristics[J].Surface&Coatings Technology,2016,303:12-17.
[9]吴晓春,邬天荣,杨浩鹏,等.H13钢低温等离子体渗硼层的热熔损性能[J].材料热处理学报,2011,32(1):97-102.
[10]孙健,王晓鸣,邹宗树.表面渗铝氧化处理后8407钢的抗熔损性能[J].过程工程学报,2010,10(4):802-808.
[11]郑旭阳,吴芮,章勐,等.表面软氮化处理对SKD61热作模具钢热熔损性及热疲劳性能的影响[J].热加工工艺,2016,45(14):161-164.
[12]YU M,SHIVPURI R,RAPP R A.Effects of molten aluminum on H13 dies and coatings[J].Journal of Materials Engineering&Performance,1995,4(2):175-181.
[13]潘成刚,曾汉荣,丁紫正,等.激光熔覆Si Cp/Ni35覆层热熔损性能研究[J].特种铸造及有色合金,2018,38(1):1-4.