采用TIA-450自绝缘二极管碳离子加速器对T5K10刀具进行了强流脉冲离子束辐照表面处理,加速器的加速电压为250 keV,束流密度为60 A/cm2～150 A/cm2,脉冲时间为80纳秒,脉冲次数为2次.XRD、SEM、EDS以及显微硬度分析研究结果表明:当束流密度达到100 A/cm2,材料表面为完全熔化凝固组织;当束流密度达到150 A/cm2时,表面层下也出现熔化凝固组织;熔化凝固组织没有明显相变.在100 A/cm2～150 A/cm2内,同未辐照表面相比,显微硬度提高1.25倍.硬度增加的主要原因是表面快速凝固组织产生硬化相和基体相中化学成分的重新分布、碳元素的烧损以及晶界的强化.
参考文献
| [1] | Remnev G E, Isakov I F, Tarbokov V A, et al. High intensity pulsed ion beam sources and their industrial applications[J].Surface and Coatings Technology, 114(1999):206. |
| [2] | Hashimoto Y, Yatsuzuka M. Study on smoothing of titanium surface by intense pulsed I on beam irradiation[J]. Vacuum, 59(2000) :313. |
| [3] | Piekoszewski J, Werner Z, Szymczyk W. Application of high intensity pulsed ion and plasma beams in modification of materials[J]. Vacuum, 63 (2001): 475. |
| [4] | Remnev G E, Shulov V A. Application of high-power ion beams for technology[J]. Laser and Particle Beams, 1993, 11(4) :707. |
| [5] | 石磊,何小平,张嘉生,等.一台小型强流脉冲离子束加速器[J].强激光与粒子束,2000,12(3):782. |
| [6] | 赵渭江,颜莎,乐小云,等.强脉冲离子注入的脉冲能量效应研究[J].核技术,2000,23(10):689. |
| [7] | 梅显秀,马腾才,王秀敏,等.强流脉冲离子束辐照W6Mo5Cr4V2高速钢表面改性研究[J].金属学报,2003,39(9):926. |
| [8] | 张洪涛,王天民,王聪,等.强脉冲离子束辐照对Ni Al基超合金IC6相变的影响[J].稀有金属材料与工程,2003,32(3):216. |
| [9] | Kutuzov V L, Remnev G E. Hardening of high alloy cutting tools by high power ion beam treatment[C]. Proc. of Ⅲ conf.on material properties modifications by particle beams Tomsk,Russia, 1994, Vol.I,6. |
| [10] | Povoroznuk S N, Poleschenko K N, Gering G L, et al. Influence of the WC- Co alloy surface properties on developing ion beam modification effect[C]. Proc. of 4th Soviet All-Union Conf. on engineering material modification by particle beams, Tomsk Russia, 1996. 362. |
| [11] | Remnev G E, Tarbokov V A, Mayeyev V A. Hard alloy surface layer modification after various ion current dengsity high power ion beam treatment [J]. European Pulsed Power Symposium,2002, Saint Louis, France. 18-46/8. |
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%