采用放电等离子烧结(SPS)技术,利用MoSi2/316L梯度材料作为过渡层连接MoSi2与316L不锈钢,并运用有限元软件ANSYS对MoSi2与316L不锈钢接头制备过程中所产生的残余应力进行分析.结果表明:随成分分布指数P增加,最大径向和轴向残余拉应力先减后增,当P＝0.8时,两者同时接近最小,且MoSi2侧的最大径向拉应力较小;随梯度层数n增加,最大径向和轴向残余拉应力逐渐减小,当n＝9时,最大径向和轴向残余拉应力分别降为n＝0时的24%和25%,且梯度层继续增多时,变化趋势变得平缓;随梯度层厚度d增加,最大径向和轴向残余拉应力逐渐减小,当d=1.0 mm时,变化趋势平缓;利用P＝0.8、d＝1.0 mm、n=9的MoSi2/316L梯度材料作为过渡层体系获得致密且均匀的连接接头.
参考文献
| [1] | Kuchino J;Kurokawa K;Shibayama T;Takahashi H .Effect of microstructure on oxidation resistance of MoSi2 fabricated by spark plasma sintering[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2004(3/4):623-628. |
| [2] | P.V. Krakhmalev;E. Strom;C. Li .Microstructure and properties stability of Al-alloyed MoSi_2 matrix composites[J].Intermetallics,2004(2):225-233. |
| [3] | 席俊杰,陈华辉,吴中,王利秋.MoSi2 材料的强韧化[J].金属热处理,2006(08):32-35. |
| [4] | Vasudevan A K;Petrovic J J .A comparative overview of molybdenum disilicide composites[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1992,A155:2-3. |
| [5] | Petrovic JJ. .MECHANICAL BEHAVIOR OF MOSI2 AND MOSI2 COMPOSITES[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(0):31-37. |
| [6] | Petrovic J J .Processing of MoSi2-Based Intermetallics[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1997,A239-A240:485-492. |
| [7] | Conzone SD.;Bartlett AH.;Butt DP. .JOINING MOSI2 TO 316L STAINLESS STEEL[J].Journal of Materials Science,1997(13):3369-3374. |
| [8] | 李云凯,王勇,韩文波.PSZ/Mo功能梯度材料的优化设计[J].机械工程材料,2003(02):14-16. |
| [9] | 陶光勇,郑子樵,刘孙和.W/Cu梯度功能材料板稳态热应力分析[J].中国有色金属学报,2006(04):694-700. |
| [10] | Shinichi Miyamoto;Masato Tani;Masao Tokita.Homogenization of Functionally Graded Materials (FGM)by Spark Plasma Sintering (SPS)[A].,1999:183-186. |
| [11] | R.U.Vaidya;P.Rangaswamy;M.A.M.Bourke .Measurement of bulk residual stresses in molybdenum disilicide/stainless steel joints using neutron scattering[J].Acta materialia,1998(6):2047-2061. |
| [12] | 许杨健,涂代惠,李现敏.换热边界下梯度功能材料板稳态热应力[J].机械工程材料,2004(07):15-17,36. |
| [13] | 梯度功能材料热应力的研究进展[J].粉末冶金材料科学与工程,2005(05):257-263. |
| [14] | 张雁,刘霓生,陈林泉,王书贤,刘勇琼.梯度功能材料物性参数的推定方法[J].固体火箭技术,2004(01):77-80,83. |
| [15] | 张幸红,曲伟,张学忠,李亚辉,韩杰才.TiC-Ni梯度功能材料的优化设计[J].材料科学与工艺,2000(01):81-83. |
| [16] | 张幸红,韩杰才,王保林,杜善义.TiC-Ni梯度功能材料的燃烧合成与残余应力分析[J].宇航学报,2001(01):89-94. |
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%