采用电弧加热镀锌钢板,通过热传导使铝合金熔化,形成两个互不接触的熔池,实现钢/铝异种金属搭接熔钎焊；利用扫描电镜(SEM)与能谱(EDS)对连接界面的微观组织进行观察与分析.结果表明:在连接界面形成两种金属间化合物,一种为接近铝合金母材呈针状或絮状的FeAl3,另一种为接近钢呈舌状或条状的Fe2Al5;反应层FeAl3的厚度在连接界面上的分布大致均匀；而反应层Fe2Al5的厚度从焊缝中心向两侧逐渐变薄；随着焊接线能量的升高,接头的承载能力呈先增大而后减小的趋势,最高承载能力可达177.2 N/mm,为铝合金母材强度的84％.
参考文献
| [1] | Mathieu A;Shabadi R;Deschamps A;Suery M;Mattei S;Grevey D;Cicala E .Dissimilar material joining using laser (aluminum to steel using zinc-based filler wire)[J].Optics & Laser Technology,2007(3):652-661. |
| [2] | Tsujino J.;Hidai K.;Hasegawa A.;Kanai R.;Matsuura H.;Matsushima K. Ueoka T. .Ultrasonic butt welding of aluminum, aluminum alloy and stainless steel plate specimens[J].Ultrasonics,2002(1/8):371-374. |
| [3] | 李亚江;王娟;刘 鹏.异种难焊材料的焊接及应用[M].北京:化学工业出版社,2004:171-174. |
| [4] | ZHANG H T;FENG J C;HE P;HACKL H .Interfacial microstructure and mechanical properties of aluninmium-zinccoated steel joints made by a modified metal inert gas welding-brazing process[J].Materials Characterization,2007,58:588-592. |
| [5] | LAUKANT H;WALLMANN C;M(ü)LLER M;KORTE M STIR N HALDENWANGER H G GLATZEL U .Fluxless laser beam joining of aluminium with zinc coated steel[J].Science and Technology of Welding & Joining,2005,10(02):219-226. |
| [6] | Borrisutthekul R;Yachi T;Miyashita Y;Mutoh Y .Suppression of intermetallic reaction layer formation by controlling heat flow in dissimilar joining of steel and aluminum alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):108-113. |
| [7] | SONG J L;LIN S B;YANG C L;MA G C LIU H .Spreading behavior and microstructure characteristics of dissimilar metals TIG welding-brazing of aluminum alloy to stainless steel[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2009,509:31-40. |
| [8] | Taichi MURAKAMI;Kazuhiro NAKATA;Hongjun TONG;Masao USHIO .Dissimilar Metal Joining of Aluminum to Steel by MIG Arc Brazing Using Flux Cored Wire[J].ISIJ International,2003(10):1596-1602. |
| [9] | G. Sierra;P. Peyre;F. Deschaux Beaume .Galvanised steel to aluminium joining by laser and GTAW processes[J].Materials Characterization,2008(12):1705-1715. |
| [10] | 宋建岭,林三宝,杨春利,马广超.铝与钢异种金属电弧熔-钎焊研究与发展现状[J].焊接,2008(06):6-9. |
| [11] | 雷振,秦国梁,林尚扬,王旭友,王威.铝与钢异种金属焊接的研究与发展概况[J].焊接,2006(04):16-20. |
| [12] | 张来启,陈光南,林均品,孙祖庆.激光合成FeAl金属间化合物涂层[J].金属热处理,2006(08):1-3. |
| [13] | 李岩,凌国平,刘柯钊,陈长安,张桂凯.热处理对不同基体表面镀铝相结构的影响[J].材料工程,2010(02):1-5. |
| [14] | 刘邦津.钢材的热浸镀铝[M].北京:冶金工业出版社,1995:10-12. |
| [15] | 夏原;姚枚;李铁藩 .Q235钢热浸铝初期镀层组织结构的变化[J].金属热处理学报,1998,12(02):34-38. |
| [16] | Tomida S.;Nakata K. .Fe-Al composite layers on aluminum alloy formed by laser surface alloying with iron powder[J].Surface & Coatings Technology,2003(0):559-563. |
| [17] | BAHADUR A;MOHANTY O N .Structural studies of on hot dip aluminized coatings mild steel[J].Materials Transactions-Japan Institute of Metals,1991,32(11):1053-1061. |
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%