采用等离子弧堆焊技术在1Cr18Ni9Ti不锈钢表面堆焊Ni50A镍基合金粉,研究不同焊接电流下堆焊层的显微组织、硬度及摩擦磨损性能.结果表明:堆焊层主要由γ-Ni组成,此外还存在CrB、M23(C,B)6、Cr7C3、Cr5B3、Ni3Si、Ni3B析出相；随着焊接电流的增大,堆焊层组织呈现不同的形态,160 A电流下的组织最细小均匀,呈小花状及细小颗粒状,其硬度最高,为680 HV耐磨性最好；堆焊层的磨损量均随着磨损时间的延长逐渐增加,190 A电流下堆焊层的磨损量最大；堆焊层的磨损机制主要为粘着磨损,并伴随有磨粒磨损,后期出现氧化磨损.
参考文献
| [1] | 赵晖,何世海,董晓强,张树生.16Mn钢板堆焊CuNi合金的渗透裂纹形成分析[J].材料热处理学报,2005(01):40-43. |
| [2] | 侯清宇,何宜柱,高甲生.Cr3C2/镍基合金等离子堆焊层的组织及耐磨性能[J].机械工程材料,2007(02):53-56,74. |
| [3] | 傅卫,王惜宝,陈国喜.镍基WC等离子弧熔敷层的组织和高温磨损性能[J].焊接学报,2009(05):65-68. |
| [4] | Kesavan, D.;Kamaraj, M. .The microstructure and high temperature wear performance of a nickel base hardfaced coating[J].Surface & Coatings Technology,2010(24):4034-4043. |
| [5] | Liyanage, T.;Fisher, G.;Gerlich, A.P. .Influence of alloy chemistry on microstructure and properties in NiCrBSi overlay coatings deposited by plasma transferred arc welding (PTAW)[J].Surface & Coatings Technology,2010(3):759-765. |
| [6] | 宇文利,刘秀丽,李伟华.等离子堆焊Ni基合金粉末熔覆层性能研究[J].金属热处理,2006(10):41-43. |
| [7] | 康建东,苏允海.堆焊电流对Fe5堆焊层组织和力学性能的影响[J].热加工工艺,2011(09):120-121. |
| [8] | 邱俊波,王泽华,周泽华,易于,江少群.等离子熔覆镍铬碳合金层的显微组织和硬度[J].机械工程材料,2011(04):83-86,90. |
| [9] | Navas C;Colaco R;de Damborenea J;Vilar R .Abrasive wear behaviour of laser clad and flame sprayed-melted NiCrBSi coatings[J].Surface & Coatings Technology,2006(24):6854-6862. |
| [10] | Li Q.;Lei TQ.;Chen CZ.;Chen WZ.;Zhang DW. .Comparison of laser-clad and furnace-melted Ni-based alloy microstructures[J].Surface & Coatings Technology,2001(2/3):122-135. |
| [11] | G. Xu;M. Kutsuna;Z. Liu .Characteristics of Ni-based coating layer formed by laser and plasma cladding processes[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):63-72. |
| [12] | Liyanage, T.;Fisher, G.;Gerlich, A.P. .Influence of alloy chemistry on microstructure and properties in NiCrBSi overlay coatings deposited by plasma transferred arc welding (PTAW)[J].Surface & Coatings Technology,2010(3):759-765. |
| [13] | Chao MJ.;Liang EJ. .Effect of TiO2-doping on the microstructure and the wear properties of laser-clad nickel-based coatings[J].Surface & Coatings Technology,2004(2/3):265-271. |
| [14] | Darabara M;Papadimitriou GD;Bourithis L .Tribological evaluation of Fe-B-TiB2 metal matrix composites[J].Surface & Coatings Technology,2007(2):246-253. |
| [15] | 何祥明,刘秀波,杨茂盛,石世宏,王明娣,傅戈雁.奥氏体不锈钢激光熔覆镍基复合涂层高温磨损行为[J].中国激光,2011(09):79-84. |
| [16] | 李志,曲敬信,赵振业,邵荷生.镍基合金涂层滑动磨损过程中磨屑的演变机理[J].润滑与密封,2003(03):48-49,53. |
| [17] | F. H. Stott .High-temperature sliding wear of metals[J].Tribology International,2002(8):489-495. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%