삽입금속 Cu를 이용한 TiAl 합금과 SCM440의 마찰용접 계면 특성

박성현; 김기영; 박종문; 최인철; Kazuhiro Ito; 오명훈; Sung-Hyun Park; Ki-Young Kim; Jong-Moon Park; In-Chul Cho; Kazuhiro Ito; Myung-Hoon Oh

Korean Journal of Materials Research, Vol.29, No.4, 258-263, April, 2019

DOI10.3740/MRSK.2019.29.4.258 Export Citation

삽입금속 Cu를 이용한 TiAl 합금과 SCM440의 마찰용접 계면 특성

Interfacial Properties of Friction-Welded TiAl and SCM440 Alloys with Cu as Insert Metal

박성현¹, 김기영^{1, 2}, 박종문¹, 최인철¹, Kazuhiro Ito³, 오명훈^{1, †}

¹금오공과대학교 신소재공학부
²A.F.W(주)
³오사카대학교 접합과학연구소

Sung-Hyun Park¹, Ki-Young Kim^{1, 2}, Jong-Moon Park¹, In-Chul Cho¹, Kazuhiro Ito³, and Myung-Hoon Oh^{1, †}

¹School of Materials Science and Engineering, Kumoh National Institute of Technology (KIT), 61 Daehakro, Gumi, Gyeongbuk 39177, Republic of Korea
²Asan Friction Welding Co., Ltd, 982-5 Keumsanri, Waekwan, Chilgok, Gyeongbuk 39909, Republic of Korea
³Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

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Since the directly bonded interface between TiAl alloy and SCM440 includes lots of cracks and generated intermetallic compounds(IMCs) such as TiC, FeTi, and Fe2Ti, the interfacial strength can be significantly reduced. Therefore, in this study, Cu is selected as an insert metal to improve the lower tensile strength of the joint between TiAl alloy and SCM440 during friction welding. As a result, newly formed IMCs, such as Cu2TiAl, CuTiAl, and TiCu2, are found at the interface between TiAl alloy and Cu layer and the thickness of IMCs layers is found to vary with friction time. In addition, to determine the relationship between the thickness of the IMCs and the strength of the welded interfaces, a tensile test was performed using sub-size specimens obtained from the center to the peripheral region of the friction-welded interface. The results are discussed in terms of changes in the IMCs and the underlying deformation mechanism. Finally, it is found that the friction welding process needs to be idealized because IMCs generated between TiAl alloy and Cu act to not only increase the bonding strength but also form an easy path of fracture propagation.

Keywords:TiAl;insert metal;interface;intermetallics;microstructure

[References]

Kim YW, JOM, 41, 24 (1989)
Yamaguchi M, Umakoshi Y, Prog. Maer. Sci., 34, 1 (1990)
Wu X, Intermetallics, 14, 1114 (2006)
Kim YW, Kim SL, Intermetallics, 53, 92 (2014)
Guther V, Allen M, Klose J, Clemens H, Intermetallics, 103, 12 (2018)
Kim YW, Kim SL, JOM, 70, 553 (2018)
Oh MH, Hwang SH, Choi SN, Kim IS, Kim SJ, J. Adv. Mater. KNUT, 2, 7 (1995)
Noda T, Intermetallics, 6, 709 (1998)
Tetsui T, Adv. Eng. Mater., 3, 307 (2001)
He P, Feng JC, Zhang BG, Qian YY, Mater. Charact., 48, 401 (2002)
Luo GX, Wu GQ, Huang Z, Ruan ZJ, Scr. Mater., 57, 521 (2007)
Noda T, Shimizu T, Okabe M, Mikubo T, Mater. Sci. Eng., A239-24, 613 (1997)
Li H, Wei H, He P, Lin T, Feng J, Huang Y, Intermetallics, 34, 69 (2013)
Lee WB, Kim YJ, Jung SB, Intermetallics, 12, 671 (2004)
Dong H, Yu L, Gao H, Deng D, Zhou W, Dong C, Trans. Nonferrous Met. Soc. China, 24, 3126 (2014)
Kumar R, Balasubramanian M, Def. Technol., 11, 65 (2015)
Lee SG, Min BH, Choi SH, Shim DK, Min TK, J. Korean Weld. Joi. Soc., 25, 53 (2007)
Muralimohan C, Muthupandi V, Sivaprasad K, Proc. Mater. Sci., 5, 1120 (2014)
Yamamoto N, Takahashi M, Aritoshi M, Ikeuchi K, Mater. Sci. Forum, 539-543, 3865 (2007)
Li P, Li J, Salman M, Liang L, Xiong J, Zhang F, Mater. Des., 56, 649 (2014)
Song YL, Liu YH, Zhu XY, Yu SR, Zhang YB, Trans. Nonferrous Met. Soc. China, 18, 14 (2008)

[1] Kim YW, JOM, 41, 24 (1989)

[2] Yamaguchi M, Umakoshi Y, Prog. Maer. Sci., 34, 1 (1990)

[3] Wu X, Intermetallics, 14, 1114 (2006)

[4] Kim YW, Kim SL, Intermetallics, 53, 92 (2014)

[5] Guther V, Allen M, Klose J, Clemens H, Intermetallics, 103, 12 (2018)

[6] Kim YW, Kim SL, JOM, 70, 553 (2018)

[7] Oh MH, Hwang SH, Choi SN, Kim IS, Kim SJ, J. Adv. Mater. KNUT, 2, 7 (1995)

[8] Noda T, Intermetallics, 6, 709 (1998)

[9] Tetsui T, Adv. Eng. Mater., 3, 307 (2001)

[10] He P, Feng JC, Zhang BG, Qian YY, Mater. Charact., 48, 401 (2002)

[11] Luo GX, Wu GQ, Huang Z, Ruan ZJ, Scr. Mater., 57, 521 (2007)

[12] Noda T, Shimizu T, Okabe M, Mikubo T, Mater. Sci. Eng., A239-24, 613 (1997)

[13] Li H, Wei H, He P, Lin T, Feng J, Huang Y, Intermetallics, 34, 69 (2013)

[14] Lee WB, Kim YJ, Jung SB, Intermetallics, 12, 671 (2004)

[15] Dong H, Yu L, Gao H, Deng D, Zhou W, Dong C, Trans. Nonferrous Met. Soc. China, 24, 3126 (2014)

[16] Kumar R, Balasubramanian M, Def. Technol., 11, 65 (2015)

[17] Lee SG, Min BH, Choi SH, Shim DK, Min TK, J. Korean Weld. Joi. Soc., 25, 53 (2007)

[18] Muralimohan C, Muthupandi V, Sivaprasad K, Proc. Mater. Sci., 5, 1120 (2014)

[19] Yamamoto N, Takahashi M, Aritoshi M, Ikeuchi K, Mater. Sci. Forum, 539-543, 3865 (2007)

[20] Li P, Li J, Salman M, Liang L, Xiong J, Zhang F, Mater. Des., 56, 649 (2014)

[21] Song YL, Liu YH, Zhu XY, Yu SR, Zhang YB, Trans. Nonferrous Met. Soc. China, 18, 14 (2008)