Fe元素对TC4ELI合金力学性能的影响
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摘要
为弥补O含量受限,TC4ELI合金强度的不足,研究了Fe元素含量在0. 08%～0. 22%范围内对TC4ELI合金力学性能的影响。结果表明:随着Fe含量的增加,TC4ELI合金棒材保持了良好的综合力学性能。其中强度的提高最为突出,Fe含量处于0. 16%～0. 22%范围内时,抗拉强度达到930 MPa,屈服强度达到860 MPa,满足了普通TC4合金强度的标准要求。Fe作为置换型元素加入钛合金中,形成结构紧密的TiFe相,形成的Ti-Fe键代替了Ti-Ti键,具备更高的键能,提高了合金的强度。Fe元素的增加,有助于合金中β相含量的增加,降低了TC4ELI合金的弹性模量。
In order to compensate for the sufficiency of strength due to limit of oxygen content in TC4ELI alloy,the effect of element Fe content in the range of 0. 08%-0. 22% on the mechanical properties of TC4ELI alloy was studied. The results show that the TC4ELI alloy bar maintains good mechanical properties with the increase of the content of the impurity Fe. The increase of strength is the most prominent.With Fe content in the range of 0. 16%-0. 22 %,the tensile strength reaches 930 MPa and the yield strength reaches 860 MPa,which meets the standard requirements for the strength of ordinary TC4 alloy. Fe added to the titanium alloy as a replacement element can form a tightly structured TiFe phase. The formed Ti-Fe bond replaces the Ti-Ti bond which has higher bond energy,and improves the strength of the alloy.The β-phase content is increased with the increase of Fe content,but the elastic modulus is reduced.
In order to compensate for the sufficiency of strength due to limit of oxygen content in TC4ELI alloy,the effect of element Fe content in the range of 0. 08%-0. 22% on the mechanical properties of TC4ELI alloy was studied. The results show that the TC4ELI alloy bar maintains good mechanical properties with the increase of the content of the impurity Fe. The increase of strength is the most prominent.With Fe content in the range of 0. 16%-0. 22 %,the tensile strength reaches 930 MPa and the yield strength reaches 860 MPa,which meets the standard requirements for the strength of ordinary TC4 alloy. Fe added to the titanium alloy as a replacement element can form a tightly structured TiFe phase. The formed Ti-Fe bond replaces the Ti-Ti bond which has higher bond energy,and improves the strength of the alloy.The β-phase content is increased with the increase of Fe content,but the elastic modulus is reduced.
引文
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[2]吕利强,席锦会,王伟,等.我国海洋工程用钛合金发展现状及展望[J].冶金工程,2015(2):89-92.LüLiqiang,Xi Jinhui,Wang Wei,et al.Development status and prospect on application of titanium alloy in ocean engineering[J].Metallurgical Engineering,2015(2):89-92.
[3]Selimin M A,Chuan L T,Idris MI,et al.Physical and chemical properties of anodised titanium in sulphuric acid for biomedical application[J].International Journal of Integrated Engineering,2018,10(3):48-52.
[4]赵晓丽.Fe对Ti46Al6Nb基合金的组织和性能的影响[D].哈尔滨:哈尔滨工业大学,2014.
[5]陈逸.Ti-Al-Mo-V-Cr-Fe系钛合金中扩散及β→α相变的动力学研究[D].西安:西北工业大学,2015.
[6]蔡建明,马济民,黄旭,等.高温钛合金中杂质元素Fe的扩散行为及其对蠕变抗力的损害作用[J].材料工程,2009(8):84-88.Cai Jianming,Ma Jimin,Huang Xu,et al.Diffusion behavior of impurity iron in high temperature titanium alloys and its detrimental effect on creep resistance[J].Material Engineering,2009(8):84-88.
[7]梁恩泉,黄森森,马英杰,等.Fe对Ti-6Al-4V ELI合金力学性能的影响[J].材料研究学报,2016,30(4):299-306.Liang Enquan,Huang Sensen,Ma Yingjie,et al.The Influence of Fe on the mechanical properties of Ti-6Al-4V ELI alloy[J].Chinese Journal of Materials Research,2016,30(4):299-306.
[8]Ming Y,Dargusch M S,Kong C,et al.In situ synchrotron radiation study of Ti H2-6Al-4V and Ti-6Al-4V:accelerated alloying and phase transformation,and formation of an oxygen-enriched Ti4Fe2O phase in Ti H2-6Al-4V[J].Metallurgical and Materials Transactions A,2015,46(1):41-45.
[9]白鹏飞,闵小华,陶晓杰,等.显微组织对医用TC4钛合金U型钉缩口的影响[J].材料导报A,2017,31(7):146-150.Bai Pengfei,Min Xiaohua,Tao Xiaojie,et al.Effect of microstructure on necking of medical U-shaped nail of TC4 titanium alloy[J].Materials Review A,2017,31(7):146-150.
[10]罗斌莉,毛江虹,杨晓康,等.连续轧制过程中TC4钛合金的组织均匀性分析[J].热加工工艺,2017,46(11):67-70.Luo Binli,Mao Jianghong,Yang Xiaokang,et al.Analysis of microstructure uniformity of TC4 titanium alloy in continuous rolling process[J].Hot Working Technology,2017,46(11):67-70.
[11]刘志成,张利军,张晨辉.氧含量对TC4钛合金力学性能的影响[J].世界有色金属,2016(8):151-153.Liu Zhicheng,Zhang Lijun,Zhang Chenhui.Effect of oxygen content on the mechanical properties of TC4 titanium alloy[J].World Nonferrous Metal,2016(8):151-153.
[12]刘清华,惠松骁,叶文君,等.合金元素对TC4钛合金动态力学性能的影响[J].稀有金属材料与工程,2013,42(7):1464-1468.Liu Qinghua,Hui Songxiao,Ye Wenjun,et al.Effect of the content of alloying elements on dynamic mechanical properties of TC4 alloy[J].Rare Metal Materials and Engineering,2013,42(7):1464-1468.
[13]《稀有金属材料加工手册》编写组.稀有金属材料加工手册[M].北京:冶金工业出版社,1984:11.
[14]刘德义,尹青学,刘世程.铁中间层钛-钢扩散复合界面组织与性能[J].材料热处理学报,2012,33(7):106-110.Liu Deyi,Yin Qingxue,Liu Shicheng.Microstructure and mechanical properties of diffusion bonded joints between titanium and low carbon steel with an iron interlayer[J].Transactions of Materials and Heat Treatment,2012,33(7):106-110.
[15]Kilmametov A,Ivanisenko Y,Straumal B,et al.Transformations ofα'martensite in Ti-Fe alloys under high pressure torsion[J].Scripta Materialia.2017,136:46-49.
[16]蒋淑英,李世春.Ti-Fe系金属间化合物价电子结构与性能分析[J].稀有金属材料与工程,2011,40(1):36-39.Jiang Shuying,Li Shichun.Analysis on valence electron structures and properties of intermetallic compounds in Ti-Fe system[J].Rare Metal Materials and Engineering,2011,40(1):36-39.
[17]莱茵斯C,皮特尔斯M.钛与钛合金[M].北京:化学工业出版社,2005:2.
[18]付艳艳,于振涛,周廉,等.显微组织对Ti-13Nb-13Zr医用钛合金力学性能的影响[J].稀有金属材料与工程,2005,34(6):881-885.Fu Yanyan,Yu Zhentao,Zhou Lian,et al.Influence of microstructure on tensile strength and fracture toughness of a Ti-13Nb-13Zr alloy[J].Rare Metal Materials and Engineering,2005,34(6):881-885.
[19]王艳玲,惠松骁,叶文君,等.新型医用钛合金Ti-39Nb-6Zr显微组织和力学性能的研究[J].热加工工艺,2009,38(14):36-40.Wang Yanling,Hui Songxiao,Ye Wenjun,et al.Study on microstructure and mechanical properties of Ti-39Nb-6Zr alloy for biomedical applications[J].Hot Working Technology,2009,38(14):36-40.
[20]Correa D R N,Kuroda P A B,Grandini C R,et al.Tribocorrosion behavior ofβ-type Ti-15Zr-based alloys[J].Materials Letters,2016,179:118-121.