全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

WCPNiCrBSi/耐热钢复合材料的界面特性及其高温磨损性能

, PP. 125-131

Keywords: 金属基复合材料,高温磨损,真空熔烧,WC,NiCrBSi

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用真空熔烧工艺制备了WCP-NiCrBSi/耐热钢复合材料,棒状增强相WCP-NiCrBSi均匀分布于基体表层,实现了复合材料的"硬韧匹配"。利用SEM、EDS和显微硬度等手段,对复合材料增强相和界面的微观组织结构进行了表征。在环-盘式试验机上对复合材料的高温磨损性能进行了研究,并与基体材料进行对比。结果表明,增强相WCP分布均匀,NiCrBSi合金在凝固过程中生成了γ-Ni(Ni3Si)、Ni-B、Cr-B和多元共晶物相。复合材料的增强相与基体之间为良好冶金结合,没有裂纹、气孔等缺陷。由于界面元素的互扩散,在增强相一侧发生了等温凝固,生成了γ-Ni固溶体层;在基体一侧的扩散影响区内弥散析出了大量的Fe-Cr-B化合物。在室温至600℃温度范围内复合材料的耐磨性都优于基体材料,复合材料的耐磨性优势在室温下最大,并随着温度的升高而逐渐减小。室温下,由于WCP凸出于磨损表面阻止了金属材料之间的直接接触,复合材料的磨损机制为轻微粘着磨损。在300℃和600℃下,由于磨损表面氧化物膜的形成,WCP-NiCrBSi/耐热钢复合材料的磨损机制转变为轻微氧化磨损。

References

[1]  鲍崇高, 王恩泽, 高义民.颗粒体积分数对Al2O3/钢基复合材料高温抗磨性的影响 [J].复合材料学报, 2001, 18(2): 61-64. Bao Chonggao, Wang Enze, Gao Yimin.Effect of the volume fraction of particles on elevated temperature wear resistance of Al2O3/steel composites [J].Acta Materiae Compositae Sinica, 2001, 18(2): 61-64.
[2]  王恩泽, 徐雁平, 鲍崇高.Al2O3颗粒/耐热钢复合材料的制备及高温磨料磨损性能 [J].复合材料学报, 2004, 21(1): 56-60. Wang Enze, Xu Yanping, Bao Chonggao.Fabrication of Al2O3/heat-resistant steel composite and its wear-resistance at high temperature and abrasive [J].Acta Materiae Compositae Sinica, 2004, 21(1): 56-60.
[3]  Berns H, Koch S.High temperature sliding abrasion of a nickel-base alloy and composite [J].Wear, 1999, 225-229: 154-162.
[4]  Berns H, Wewers B.Development of an abrasion resistant steel composite with in situ TiC particles [J].Wear, 2001, 250-251: 1386-1395.
[5]  陈劲松.激光烧结WC颗粒增强镍基合金块体成形实验研究 [J].中国激光, 2010, 37(3): 868-872. Chen Jinsong. Experimental research on formation of laser sintering WC particles reinforced Ni-base alloy bulk [J].Chinese Journal of Lasers, 2010, 37(3): 868-872.
[6]  侯书增, 鲍崇高, 付青然.硬质合金/高铬铸铁基复合材料的界面特性及磨损性能研究 [J].西安交通大学学报, 2012, 46(5): 73-78. Hou Shuzeng, Bao Chonggao, Fu Qingran.Interfacial characteristics and abrasive wear behavior of cemented carbide/high-Cr white cast iron composite [J].Journal of Xi’an Jiaotong University, 2012, 46(5): 73-78.
[7]  Villars P, Prince A, Okamoto H.Handbook of ternary alloy phase diagrams [M].Ohio: ASM International, Metals Park, 1995: 5508-5513.
[8]  Massalski T B.Binary alloy phase diagrams [M].Ohio: ASM International, Metals Park, 1986: 370-371.
[9]  Yuan X, Kang C Y, Kim M B.Microstructure and XRD analysis of brazing joint for duplex stainless steel using a Ni-Si-B filler metal [J].Materials Characterization, 2004, 60(9): 923-931.
[10]  Tung S K, Lim L C, Lai M O.Solidification phenomena in nickel base brazes containing boron and silicon [J].Scripta Materialia, 1996, 34(5): 763-769.
[11]  Wu Na, Li Yajiang, Wang Juan.Microstructure of Ni-NiCr laminated composite and Cr18-Ni8 steel joint by vacuum brazing [J].Vacuum, 2012, 86(12): 2059-2063.
[12]  Ou C L, Liaw D W, Du Y C, Shiue P K.Brazing of 422 stainless steel using the AWS classification BNi-2 braze alloy [J].Journal of Materials Science, 2006, 41(19): 6353-6361.
[13]  Jiang W, Gong J, Tu S T.A new cooling method for vacuum brazing of a stainless steel plate-fin structure [J].Materials & Design, 2010, 31(1): 648-653.
[14]  Jiang J, Stott F H, Stack M M.A generic model for dry sliding wear of metals at elevated temperatures [J].Wear, 2004, 256(9/10): 973-985.
[15]  Pauschitz A, Roy M, Franek F.Mechanisms of sliding wear of metals and alloys at elevated temperatures [J].Tribology International, 2008, 41(7): 584-602.
[16]  Inman I A, Datta P S.Studies of high temperature sliding wear of metallic dissimilar interfaces Ⅳ : Nimonic 80A versus Incoloy 800HT [J].Tribology International, 2011, 44(12): 1902-1919.
[17]  Inman I A, Rose, S R, Datta P K.Studies of high temperature sliding wear of metallic dissimilar interfaces Ⅱ : Incoloy MA956 versus Stellite 6 [J].Tribology International, 2006, 39(11): 1361-1375.
[18]  Wilson J E, Stott F H, Wood G C.The development of wear-protective oxides and their influence on sliding fraction [C]//Proceeding of the Royal Society of London. London: Royal Society of London, 1980: 557-574.
[19]  Wei M X, Wang S Q, Wang L.Effect of tempering conditions on wear resistance in various wear mechanisms of H13 steel [J].Tribology International, 2011, 44(7/8): 898-905.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133