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雷玉成, 聂加俊, 张振, 陈希章. Ti-Ni合金对SiCp/AlMMCs等离子弧原位焊接焊缝性能的影响[J]. 焊接学报, 2008, (10): 13-16.
引用本文: 雷玉成, 聂加俊, 张振, 陈希章. Ti-Ni合金对SiCp/AlMMCs等离子弧原位焊接焊缝性能的影响[J]. 焊接学报, 2008, (10): 13-16.
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LEI Yucheng, NIE Jiajun, ZHANG zhen, CHEN Xizhang. Effects of Ti-Ni on properties of plasma arc "in-situ" welding for SiCp/Al MMCs[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (10): 13-16.
Citation: LEI Yucheng, NIE Jiajun, ZHANG zhen, CHEN Xizhang. Effects of Ti-Ni on properties of plasma arc "in-situ" welding for SiCp/Al MMCs[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (10): 13-16.
shu

Ti-Ni合金对SiCp/AlMMCs等离子弧原位焊接焊缝性能的影响

Effects of Ti-Ni on properties of plasma arc "in-situ" welding for SiCp/Al MMCs

    摘要
  • 摘要: 以Ti-Ni合金作为填加材料,采用氮氩混合等离子气对SiCp/Al基复合材料进行等离子弧原位焊接。结果表明,填加Ti-Ni合金进行等离子弧原位焊接,在焊缝组织中生成了新的增强颗粒TiN,TiC,AlN,Al3Ti和Al3Ni,未发现明显的针状相生成,有效的抑制了脆性相Al4C3,并且接头组织致密,结合较好。Ni元素的添加,降低了SiC溶解程度,使得熔池中的结晶热显著提高,改善了熔池的流动性。同时在焊缝组织中形成了新的增强相AlNi,Al3Ni,从而有效地提高接头的力学性能。采用Ti-Ni合金进行等离子弧原位焊接,接头的抗拉强度为215.4 MPa,达到母材强度的67.3%。

     

    Abstract: Plasma arc "in-situ" welding of SiCp/Al MMCs were carried out using argon-nitrogen mixture as plasma gases with Ti-Ni alloying as "in-situ" material.The results showed that the new composite reinforced phases are produced in the seam, such as TiN, TiC, AlN, Al3T, Al3Ni, which ensured the quality of joints, but the needle-like brittle phases Al4C3 is not found, the metal Ni reduced the solubility of SiC, and increased the crystallization heat greatly, which improved the fluidity of weld pool.The new reinforced phases like AlNi, Al3Ni improve the mechanical properties of weld seam effectilvely.The mechanical testing results showed that the maximum tensile strengths obtained with Ti-Ni alloy as "in-situ" material are 215.4 MPa, which is about 67.3% of the base metal stength.

     

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