金属学报  2005, Vol. 41 Issue (4): 397-400

论文 本期目录 | 过刊浏览 |

孕育剂Ti, Zr对2219 Al--Cu合金焊缝组织及性能的影响

国旭明;杨成刚;钱百年;徐 强;张洪延

中国科学院金属研究所; 沈阳 110016

Effects Of Inoculants Ti And Zr On The Microstructures And Properties Of 2219 Al--Cu Alloy Welds

GUO Xuming; YANG Chenggang; QIAN Bainian; XU Qiang; ZHANG Hongyan

Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016

国旭明; 杨成刚; 钱百年; 徐强; 张洪延 . 孕育剂Ti, Zr对2219 Al--Cu合金焊缝组织及性能的影响[J]. 金属学报, 2005, 41(4): 397-400 .
, , , , . Effects Of Inoculants Ti And Zr On The Microstructures And Properties Of 2219 Al--Cu Alloy Welds[J]. Acta Metall Sin, 2005, 41(4): 397-400 .

摘要 参考文献 相关文章 Metrics 全文: PDF(445 KB)   摘要: 研究了焊丝中添加孕育剂Ti, Zr对2219 Al--Cu合金MIG焊缝组织和性能的影响。实验结果表明, 当焊丝中Ti, Zr添加量分别为0.26%和0.33%时, 整个焊缝形成了全部等轴晶组织, 并且沿晶界分布的共晶相的数量减少, 显著提高了焊缝金属的抗拉强度和延伸率。在焊缝金属中, Ti, Zr以金属间铝化物质点的形式提供非均质形核的核心, 促进了均匀、细小的等轴晶粒的形成。 关键词 ： 孕育剂,  Al--Cu合金,  MIG焊缝     Abstract：The microstructure and toughness of the coarse--grained heat-affected zone (CGHAZ) in laser welding of RPC (relaxation--precipitation controlling transformation) steel were investigated by thermal simulation with a Gleeble-1500 thermal simulator. The influence of the time cooled from 800-500℃, t8/5 (0.3-30 s), on the microstructure of CGHAZ and the low temperature toughness were discussed. The experimental results indicate that the granular bainite is the dominate microstructure of the CGHAZ in laser welding of RPC steel, and the impact energy of the CGHAZ is much higher than that of base metal when t8/5 is between 3 s and 8 s. Considering the effect of the size, volume, number and shape of the M-A constituent on the toughness, a toughness factor of the M-A constituent is defined. As the toughness factor increases, the toughness of the granular bainite increases. The varied trend of the impact toughness with t8/5 is mainly determined by the toughness factor of the M-A constituent. Key words： ultra-fine low alloy steel    coarse-grained heat-affected zone 收稿日期: 2004-06-15      ZTFLH:  TG142.2   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 国旭明 杨成刚 钱百年 徐强 张洪延 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2005/V41/I4/397 [1]Chinese Welding Society. Welding Handbook (Vol 2). Beijing: China Machine Press, 2001: 520 (中国焊接学会编.焊接手册(第二卷).北京:机械工业出版社, 2001:520) [2]Janaki Ram G D, Mitra T K, Olson D L. Mater Sci Eng, 2000; 276A: 48 [3]Murty B S, Kori S A, Chakraborty M. Int Mater Rev, 2002; 47(1): 3 [4]Ganaha T, Pearce B P, Kerr H W. Metall Trans, 1980; 11A: 1351 [5]Mousavi M G, Cross C E, Grong (?). Sci Technol Weld Join, 1999; 4(6): 381 [6]Yunjia H, Frost R H, Olson D L, Edwards G R. Weld J, 1989; 68(7): 280s [7]Norman A F, Hyde K, Costello F, Thompson S, Birley S, Prangnell P B. Mater Sci Eng, 2003; A354: 188 [8]Guo X M, Yang C G, Qian B N, Chang Y L, Zhang H Y. Trans Chin Welding Inst, 2004; 25(4): 5 (国旭明,杨成刚,钱百年,常云龙,张洪延.焊接学报,2004; 25(4):5) [9]Yunjia H, Dalu G, Zhixiong S. Conference on Proceedings of the Aluminum-Lithium Ⅲ. 1986; 1215 [10]Reddy G M, Gokhale A A, Prasad K S, Prasad Rao K. Sci Technol Weld Join, 1998; 3(4): 208 [11]Kou S, Le Y. Weld J, 1986; 65(12): 305s [12]Dvornak M J, Frost R H, Olson D L. Weld J, 1989; 68(10): 327s [1] 江慧丰; 张青川; 蒋震宇; 伍小平 . Al-Cu合金中PLC效应时域和空域行为的实验研究[J]. 金属学报, 2005, 41(7): 727-732 . Viewed Full text Abstract Cited   Shared      Discussed