选用合适的激光工艺参数,利用激光熔覆工艺在中碳钢表面制备了原位自生TiB2/Fe金属陶瓷细晶复合材料涂层,涂层中还含有少量的Fe2B,TiB等硬质相,涂层组织较基体显著细化.研究表明,晶粒细化行为与激光熔覆非平衡快速凝固过程以及原位自生细小硬质颗粒增加非均质形核密切相关.此外,粘结金属基体中强烈的位错运动细化亚结构也促进了晶粒细化.细晶组织对涂层性能的改善非常有利.
参考文献
| [1] | Z. L. Wang;J. S. Yin .Self-assembly of shape-controlled nanocrystals and their in-situ thermodynamic properties[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1):39-47. |
| [2] | Gao Y.;Elder S.A. .TEM study of TiO_2 nanocrystals with different particle size and shape[J].Materials Letters,2000(3/4):228-232. |
| [3] | 王磊,樊建中,熊柏青.SPD 法及P/M 法制备金属纳米体材料进展[J].稀有金属,2002(02):129-133. |
| [4] | Robert F. Cochrane;Sharon E. Battersby;Andrew M. Mullis .The mechanisms for spontaneous grain refinement in undercooled Cu-O and Cu-Sn melts[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(0):262-266. |
| [5] | 张建斌,马勤,周琦,王静宜.表面强化对工业纯钛显微组织的影响[J].中国有色金属学报,2001(06):1037-1040. |
| [6] | Jong-Kuek Park;Wook-Seong Lee;Young-Joon Baik;Ki-Woong Chae .The pronounced grain size refinement at the edge position of the diamond-coated WC-Co inserts under microwave plasma with negative bias[J].Diamond and Related Materials,2003(10/11):1657-1662. |
| [7] | 曹莹,姚景元,丁桂甫,杨春生.电沉积纳米镀锌层的机理研究[J].表面技术,2003(06):20-21,24. |
| [8] | Pinkerton AJ.;Li L. .The effect of laser pulse width on multiple-layer 316L steel clad microstructure and surface finish[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(0):411-416. |
| [9] | YANGSan;ZHONG Min-lin;LIU Wen-jin .Studyofin-situTiCparticlereinforcedNi-basedalloycompositecoatingsproducedbylasercladding[J].Journal of Aeronautical Materials,2002,22(01):26-29. |
| [10] | S. Gorsse;D. B. Miracle .Mechanical properties of Ti-6Al-4V/TiB composites with randomly oriented and aligned TiB reinforcements[J].Acta materialia,2003(9):2427-2442. |
| [11] | Liu XY. .Effect of foreign particles: a comprehensive understanding of 3D heterogeneous nucleation[J].Journal of Crystal Growth,2002(Pt.3):1806-1812. |
| [12] | 冯淦,石连捷,吕坚,卢柯.低碳钢超声喷丸表面纳米化的研究[J].金属学报,2000(03):300-303. |
| [13] | LiuG;LU J;LU K .Surfacenanocrystallizationof316Lst-ainlesssteelinducedbyultranicshotpeening[J].Materials Science and Engineering A,2000,286:91-95. |
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%