对引线框架用KFC铜合金板坯在固溶处理后进行冷轧变形，然后分别在500，400℃两次时效处理间实施不同变形量的冷轧变形，采用光学显微镜、TEM、力学性能试验机和电导率测试仪等研究了低温形变热处理对KFC铜合金组织和性能的影响。结果表明：随着两次时效之间的冷轧变形量从0％增加到90％，合金的位错增殖越明显，第二相析出越充分；当冷轧变形量为75％时，铜合金可获得最佳的综合性能，其抗拉强度达到417MPa，硬度达到126HV，伸长率达到11％，电导率达到91．2％IAcS，并具有良好的热稳定性。
The KFC copper alloy plates used for lead frame were cold rolled after solid solution, then cold rolling with different deformation were done between the two aging treatments at 500℃ and 400℃ respectively. The effect of the low temperature thermo-mechanical treatment on the microstructure and properties of the alloy was studies by means of optical microscopy, TEM, mechanical property test machine and conductivity analyzer. The results show that with increase of cold rolling deformation between the aging treatments from 0% to 90%, the dislocation increment of the alloy was more obviously and the precipitation of second phase was more sufficient. When the cold rolling deformation was 75%, the alloy had optimal comprehensive properties, the tensile strength was 417 MPa, the hardness was 126 HV, the elongation was 11%, the conductivity was 91.2% IACS, and its thermal stability was good.
参考文献
| [1] | 向文永,陈小祝,匡同春,成晓玲,钟秋生,刘国洪.集成电路用引线框架材料的研究现状与趋势[J].材料导报,2006(03):122-125. |
| [2] | 黄国杰,谢水生,闫晓东,涂思京,李兴刚.KFC引线框架铜合金带材的生产工艺研究[J].功能材料,2004(z1):2207-2210. |
| [3] | 王东锋,夏成宝,康布熙,刘平.Cu-Ni-Si合金的时效析出与再结晶[J].材料科学与工艺,2008(02):220-223. |
| [4] | 龙红军,杨元政,陈小祝,陶平均.引线框架用铜合金C194的制备与性能研究[J].热加工工艺,2009(16):125-128,132. |
| [5] | 张红钢 .Cu-Fe-P合金高温热变形行为研究[D].中南大学,2004. |
| [6] | 陈秀琴.KFC引线框架材料组织性能研究[J].江西有色金属,2006(03):34-36. |
| [7] | 陈彬,董企铭,康布熙,刘平,田保红,黄金亮.热轧态Cu-Fe-P合金的相变动力学研究[J].热加工工艺,2003(06):9-10,13. |
| [8] | HO J. RYU;HYUNG K. BAIK;SOON H. HONG .Effect of thermomechanical treatments on microstructure and properties of Cu-base leadframe alloy[J].Journal of Materials Science,2000(14):3641-3646. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%