分别对在液N冷却、液Ar冷却、置于室温环境和加热到473 K条件下的Zr55Cu30Al10Ni5非晶合金试样进行脉冲激光重熔实验,以研究试样温度对激光重熔非晶合金晶化的影响.结果显示,在采用有、无Ar气侧吹的情况下基材温度,特别是基材温度较低时,对激光重熔块体非晶合金晶化的影响规律明显不同.激光重熔实验中,无Ar气侧吹时,对在液Ar冷却和置于室温环境下的试样,激光重熔后热影响区的晶化程度类似,在液Ar冷却下的试样熔池较深.对于加热到473 K的试样,热影响区的晶化程度最为严重,且熔池最深.激光重熔实验中采用Ar气侧吹时,与室温环境的试样相比,液N冷却对于激光重熔非晶合金的晶化有明显的抑制作用.试样温度对非晶合金晶化的影响源于:一、试样本身的温度越低,热影响区的冷速越快,晶化越少;二、试样周围的气氛温度越低,激光重熔过程中,等离子体对激光的屏蔽效应也越小,实际能量输入越高,晶化越严重.有Ar气侧吹时,气氛温度为侧吹气体的温度,所以试样温度较低,晶化较少.在没有Ar气侧吹时,气氛温度接近于试样温度,上述2个因素同时作用,导致试样温度对晶化的影响规律非单调变化.
参考文献
[1] | Wang C,Zhang Q S,Jiang F,Zhang H F,Hu Z Q.Acta Metall Sin,2002; 38:765(王成,张庆生,江峰,张海峰,胡壮麒.金属学报,2002:38:765) |
[2] | Inoue A,Takeuchi A.Acta Mater,2011; 59:2243 |
[3] | Byrne C,Eldrup M.Science,2008; 321:502 |
[4] | Kumagai N,Samata Y,Kawashima A,Asami K,Hashimoto K.J Non-Cryst Solids,1987; 93:78 |
[5] | Kim J H,Lee C,Lee D M,Sun J H,Shin S Y,Bae J C.Mater Sci Eng,2007; A449-451:872 |
[6] | Chen B,Pang S,Han P,Li Y,Yavari A R,Vaughan G,Zhang T.J Alloys Compd,2010; 504:S45 |
[7] | Yue T M,Su Y P,Yang H O.Mater Lett,2007; 61:209 |
[8] | Yang G L,Lin X,Liu F C,Hu Q,Ma L,Li J F,Wei D H.Intermetallics,2012; 22:110 |
[9] | Lin X,Yang H O,Chen J,Huang W D.Acta Metall Sin,2006; 42:361林鑫,杨海欧,陈静,黄卫东.金属学报,2006; 42:361 |
[10] | Cao J,Liu F C,Lin X,Huang C P,Chen J,Huang W D.Opt Laser Technol,2013; 45:228 |
[11] | Liu F C,Lin X,Huang C P,Song M H,Yang G L,Chen J,Huang W D.J Alloys Compd,2011; 509:4505 |
[12] | Cervo R,Ferro P,Tiziani A,Zucchi F.J Mater Sci,2010;45:4378 |
[13] | Liu F C,Lin X,Yang G L,Song M H,Chen J,Huang W D.Opt Laser Technol,2011; 43:208 |
[14] | Jia W P,Chen J,Lin X,Zhong C W,Huang W D.Acta Metall Sin,2007; 43:546(贾文鹏,陈静,林鑫,钟诚文,黄卫东.金属学报,2007; 43:546) |
[15] | Liu F C,Lin X,Yang G L,Huang C P,Chen J,Huang W D.Acta Metall Sin,2010; 46:1047(刘奋成,林鑫,杨高林,黄春平,陈静,黄卫东.金属学报,2010; 46:1047) |
[16] | Laeng J,Stewart J G,Liou F W.Int J Prod Res,2000;38:3973 |
[17] | Sun H,Flores K M.Metall Mater Trans,2010; 41A:1752 |
[18] | Zheng B,Zhou Y,Smugeresky J E,Lavernia E J.Metall Mater Trans,2009; 40A:2009 |
[19] | Wang H S,Chen H G,Jang J S C,Chiou M S.Mater Sci Eng,2010; A528:338 |
[20] | Yamasaki M,Kagao S,Kawamura Y.Scr Mater,2005; 53:63 |
[21] | Hu Q,Lin X,Yang G L,Huang W D,Li J F.Acta Metall Sin,2012; 48:1467(胡桥,林鑫,杨高林,黄卫东,李金富.金属学报,2012; 48:1467) |
[22] | Xing D W,Shen J,Zhang L F,Sun J F,Wang X D,Wang H.J Alloys Compd,2009; 481:531 |
[23] | Zheng Q G,Gu J H.Interaction between Laser and Matter.Wuhan:Huazhong University of Science and Technology Press,1996:129(郑启光,辜建辉.激光与物质相互作用.武汉:华中理工大学出版社,1996:129) |
[24] | Kuo T Y,Lin Y D.Mater Trans,2007; 48:219 |
[25] | Shao D,Hu B,Zheng Q G.Advanced Laser Manufacturing Technology and Device Integration.Beijing:Science Press,2009:44(邵丹,胡兵,郑启光.激光先进制造技术与设备集成.北京:科学出版社,2009:44) |
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%