TEM investigations on hydrogen induced phasetransformation in Ti-6Al-4V alloys

doi:10.11890/1006-7191-105-357

Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (5): 357-362.DOI: 10.11890/1006-7191-105-357

• Research paper • Previous Articles Next Articles

TEM investigations on hydrogen induced phasetransformation in Ti-6Al-4V alloys

Zhonggang SUN¹, Guoqing CHEN¹, Xuesong FU¹, Yaoqi WANG², Hongliang HOU²,Wenlong ZHOU¹

1 School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China
2 Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China

Received:2010-03-25 Revised:2010-04-22 Online:2010-10-25 Published:2010-10-14
Contact: Guoqing CHEN

Abstract

Abstract: The TEM and HRTEM were utilized to investigate the phase transformation of hydrogenated Ti-6Al-4V alloys (0 wtpct-0.9 wt pct H) treated by annealing and quenching from β field. The results indicate that the orthorhombic α'' martensite and β phase appear progressively with the increase of hydrogen concentration. On the other hand, hydrides with sizes of 2-5 nm are observed in the specimens containing more than 0.6 wt pct hydrogen. The formation of α'' and twins can be attributed to the internal stress caused by solid solution of hydrogen and hydrides precipitation.

Key words: Ti-6Al-4V alloys, Martensitic transformation, Hydrogenation, Hydride

Zhonggang SUN, Guoqing CHEN, Xuesong FU, Yaoqi WANG, Hongliang HOU,Wenlong ZHOU. TEM investigations on hydrogen induced phasetransformation in Ti-6Al-4V alloys[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(5): 357-362.

[1]	Pengfei Gao, Weijian Chen, Feng Li, Beijia Ning, Zhengzhi Zhao. Quasi-Situ Characterization of Deformation in Low-Carbon Steel with Equiaxed and Lamellar Microstructure Treated by the Quenching and Partitioning Process [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(12): 1657-1665.
[2]	Li-Na Wang, Ping Yang, Ting Jin, Wei-Min Mao. Different Mechanisms of ε-M and α′-M Variant Selection and the Influencing Factors of ε-M Reversion During Dynamic Tension in TRIP Steel [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(5): 449-455.
[3]	Zhong-Yuan Feng, Xin-Jie Di, Shi-Pin Wu, Dong-Po Wang, Xiao-Qian Liu. Comparison of Microstructure and Residual Stress Between TIG and MAG Welding Using Low Transformation Temperature Welding Filler [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(3): 263-272.
[4]	Jing-Li Li, Na Zhang, Xiao-Xuan Wang, Di Wu, Rong-Shi Chen. Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(2): 189-198.
[5]	Hai-Yan Yang, Jing Li, Ping Yang. The Change of Orientation Relationships Between Austenite and α′-Martensite During Deformation in High Manganese TRIP Steel [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(3): 289-294.
[6]	Xi-Feng Li, Wei Ding, Jian Cao, Li-Yan Ye, Jun Chen. In Situ TEM Observation on Martensitic Transformation during Tensile Deformation of SUS304 Metastable Austenitic Stainless Steel [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(3): 302-306.
[7]	Xi-Li Lu, De-Xi Su, Feng Chen, Wei-Li Liu, Yang-Guang Shi, Yun-Xiang Tong, Li Li. Martensitic Transformation and Its Thermal Cycling Stability in Ni₅₆Mn₂₁Cu₄Ga₁₉ High-Temperature Shape Memory Ribbon [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(2): 243-248.
[8]	Anna Churakova, Dmitry Gunderov, Alexander Lukyanov, Niklas Nollmann. Transformation of the TiNi Alloy Microstructure and the Mechanical Properties Caused by Repeated B2-B19′ Martensitic Transformations [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(10): 1230-1237.
[9]	Ke Zhang, Ping Liu, Wei Li, Zheng-Hong Guo, Yong-Hua Rong. High Strength-Ductility Nb-microalloyed Low Martensitic Carbon Steel: Novel Process and Mechanism [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(10): 1264-1271.
[10]	Mustafa Türkmen,Süleyman Gündüz. Bake-Hardening Response of High Martensite Dual-Phase Steel with Different Morphologies and Volume Fractions [J]. Acta Metallurgica Sinica (English Letters), 2014, 27(2): 279-289.
[11]	Haitao Si, Renlong Xiong, Fan Song, Yuhua Wen,Huabei Peng. Wear Resistance of Austenitic Steel Fe–17Mn–6Si–0.3C with High Silicon and High Manganese [J]. Acta Metallurgica Sinica (English Letters), 2014, 27(2): 352-358.
[12]	Y.F. Wang, J.M. Wang, C.B. Jiang , H.B. Xu*. COMPOSITION TRIANGLE DIAGRAMS OF Ni-Mn-Ga MAGNETIC SHAPE MEMORY ALLOYS [J]. Acta Metallurgica Sinica (English Letters), 2006, 19(3): 171-175 .
[13]	X.Z.Sun. Degradation behaviors of new type TiV-based electrode alloys [J]. Acta Metallurgica Sinica (English Letters), 2006, 19(1): 68-74 .
[14]	Y.Q.Ma, C.B.Jiang, H.B.Xu. MARTENSITIC TRANSFORMATION AND THERMAL STABILITY IN Cu-Al-Co AND Cu-Al-Zr ALLOYS [J]. Acta Metallurgica Sinica (English Letters), 2003, 16(6): 445-448 .
[15]	M.S.Zhao, Y.Z.Zeng. MICROSTRUCTURE AND ELECTROCHEMICAL CHARACTERISTICS OF Zr0.9Ti0.01（Ni1.1.Mn0.7V0.2）x METAL HYDRIDE ELECTRODE [J]. Acta Metallurgica Sinica (English Letters), 2003, 16(3): 192-196 .

TEM investigations on hydrogen induced phasetransformation in Ti-6Al-4V alloys

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments