采用XRD, SEM和TEM研究了TC16钛合金在700-900℃固溶后淬火的显微组织和相组成, 以及淬火温度对拉伸性能的影响. 结果表明, 在700和750℃淬火, TC16钛合金由初生α相、亚稳β相和微量ω相组成; 随着淬火温度的升高, 合金出现了β→α''的马氏体相变; 从β单相区淬火,合金由α''马氏体组成. 拉伸实验表明, 拉伸过程中亚稳组织试样出现应力诱发α''马氏体相转变, 导致屈服强度降低.
The evolution of microstructure and phase transformation in TC16 titanium alloy after solution and then quenching from 700 ℃ to 900℃ were investigated by XRD, SEM and TEM, and the corresponding tensile properties were also measured. The results reveal that TC16 titanium alloy consists of primary α phase, metastable β phase and small amount of ω phase when quenching at 700 and 750 ℃. With quenching temperature increasing, the phase transformation of β → α'' happens. The alloy is completely composed of α'' martensite when quenching from single β phase field. Tensile test shows the yield strength of metastable microstructure samples is lowered due to stress induced α'' martensitic transformation.
[1] Zhang Q L, Wang Q R, Li X W. Mater Eng, 2007; 284: 11
(张庆玲, 王庆如, 李兴无. 材料工程, 2007; 284: 11)
[2] Ma Q Q, Zheng W W, Li X W. Mater Eng, 2009; 308: 19
(马琴琴, 郑为为, 李兴无. 材料工程, 2009; 308: 19)
[3] Li X W, Lu M X, Sha A X, Zhang L. Mater Sci Eng, 2008; A490: 193
[4] Wu C Z, Li X W. Rare Met Mater Eng, 2008; 37(suppl.3): 580
(吴崇周, 李兴无. 稀有金属材料与工程, 2008; 37(增3): 580)
[5] Sha A X, Li X W, Li H E, Wang Q R. Chin J Nonferrous Met, 2010; 20: 943
(沙爱学, 李兴无, 李红恩, 王清瑞. 中国有色金属学报, 2010; 20: 943)
[6] Li X W, Sha A X, Chu J P, Zhang L, Lu M X. Mater Eng, 2007; 292: 3
(李兴无, 沙爱学, 储俊鹏, 张雷, 路民旭. 材料工程, 2007; 292: 3)
[7] Li X W, Su S M, Lu M X, Sha A X, Chu J P. J Aeronaut Mater, 2008; 28(3): 82
(李兴无, 苏生明, 路民旭, 沙爱学, 储俊鹏. 航 空材料学报, 2008; 28(3): 82)
[8] Sass S L. J Less–Common Met, 1972; 28: 157
[9] Jones N G, Dashwood R J, Jackson M, Dye D. Acta Mater, 2009; 57: 3830
[10] Boyer R, Welsch G, Collings E W. Materials Properties Handbook: Titanium Alloy. OH, Materials Park: ASM International, 1994: 41
[11] Luetjering G, Williams J C. Titanium. Heidelberg: Springer, 2003: 30
[12] Borisova E A et al, translated by Chen S Q. Metallography of Titanium Alloys. Beijing: National Defence Inductry Press, 1986: 327
(鲍利索娃 E A 等著, 陈石卿 译. 钛合金金相学. 北京: 国防工业出版社, 1986: 327)
[13] Duerig T W, Albrecht J, Richter D, Fishcher P. Acta Mater, 1982; 30: 2161
[14] Duerig T W, Terlinde G T, Williams J C. Metall Trans, 1980; 11A: 1987
[15] Grosdidier T, Philippe M J. Mater Sci Eng, 2000; A291: 218
