第26卷第5期 李伟雄,等:高性能医用钴基合金强化机理的研究进展 1053 9LI B Q, STEIGAUF T, MCINTYRE P, SORENSEN D. Texture 2005,398(1):204-208. and microstructure of Ag core MP35N wire with NDR [55] SAMIEE M, ASGARI S. Influence of solution treatment on Process[ Cp/proceedings of the Materials Processes for precipitation behavior of a Ni-Co alloy[]. Scripta Materialia, Medical Devices Conference 2009. Minneapolis, USA: ASM 2007,57(2:93-96 International. 2010- 56 SINGH R P, DOHERTY R D. Strengthening in multiphase 50 DRAPIER J M, VIATOUR P, COUTSOURADIS D (MP35N) alloy: Part I. Ambient temperature deformation and HABRAKEN L. Hardening mechanisms in multiphase alloy recrystallization]. Metallurgical Transactions A, 1992, 23(1): MP3 NU Cobalt1970.49:171-186 307-319 [51] SHAJI E M, KALIDINDI S R, DOHERTY R D. Influence of [57] LI B Q, SoRENSEN D, STEIGAUF T. Phase transformation old-work and aging heat treatment on strength and ductility of of the MP35NJ]. Materials Science and Engineering A, 1999, 272(2)- Materials Processes for Medical Devices Conference 2011 371-379 USA: ASM International 2013: 131-138. [52]LU Shi-qiang, HUANG Bo-yun, HE Yue-hui, TANG Jian-cheng. (58 OTOMO T, MATSUMOTO H, NOMURA N, CHIBA A Hardening mechanism of MP159 alloy induced by aging] Transactions of Nonferrous Metals Society of China, 2004, 12(2) Youngs modulus and strength of Co-Ni-Cr-Mo alloy[!J 256-259 Materials Transactions, 2010, 51(3): 434-441 53 ASGARI S. Structure and strain hardening of superallo 59]HAN G W, JONES I P, SMALLMAN R E Direct ev AEREX350J. Journal of Materials Processing Technology, Suzuki segregation and cottrell pinning in MP159 superalloy 2001,118(1):246-250 obtained by FEG (S)TEM/EDXU). Acta Materialia, 2003, 54] NAJAFI H, ASGARI S. Strain hardening mechanisms in aged 51(10):2731-2742. AEREX350 superalloy[]. Materials Science and Engineering A, Progress on strengthening mechanisms of igh performance medical cobalt based alloy LI Wei-xiong,2,3, XU Cheng2, 3, LI Qiong2,, WEI Xi-cheng, YANG Li-jing,3, SONG Zhen-lun2,3 (1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China, 2. Cixi Institute of Biomedical Engineering, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo 315300, China 3. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China 4. Medtronic Neuromodulation, Minnesota 55432, USA) Abstract: MP35N alloy is a kind of high performance medical cobalt based alloy, which has good mechanical properties, corrosion resistance and good biocompatibility. It has wide application prospect in medical devices and aerospace. The mechanical properties of MP35N alloy and two kinds of strengthening processes on properties of the alloy were summarized. The strengthening mechanism of MP35N alloy was divided into four categories, and the development and current situation of different strengthening mechanisms were described. The advantages and disadvantages of different strengthening mechanisms of MP35N alloy as well as the ideas about MP35n alloy in the future research were analyzed Key words: medical cobalt based alloy, MP35N; strengthening mechanism; ageing; cold deformation Foundation item: Project(2013B10046)supported by Industry Technology Innovation and Industrialization of ningbo Received date: 2015-06-01; Accepted date: 2016-01-12 Corresponding author: SONG Zhen-lun; Tel: +86-13867853975; E-mail: songzhenlun @nimteac (编辑王超)第 26 卷第 5 期 李伟雄，等：高性能医用钴基合金强化机理的研究进展 1053 [49] LI B Q, STEIGAUF T, MCINTYRE P, SORENSEN D. Texture and microstructure of Ag core MP35N wire with NDR Process[C]//Proceedings of the Materials & Processes for Medical Devices Conference 2009. Minneapolis, USA: ASM International, 2010: 111−114. [50] DRAPIER J M, VIATOUR P, COUTSOURADIS D, HABRAKEN L. Hardening mechanisms in multiphase alloy MP35N[J]. Cobalt, 1970, 49:171−186. [51] SHAJI E M, KALIDINDI S R, DOHERTY R D. Influence of cold-work and aging heat treatment on strength and ductility of MP35N[J]. Materials Science and Engineering A, 1999, 272(2): 371−379. [52] LU Shi-qiang, HUANG Bo-yun, HE Yue-hui, TANG Jian-cheng. Hardening mechanism of MP159 alloy induced by aging[J]. Transactions of Nonferrous Metals Society of China, 2004, 12(2): 256−259. [53] ASGARI S. Structure and strain hardening of superalloy AEREX350[J]. Journal of Materials Processing Technology, 2001, 118(1): 246−250. [54] NAJAFI H, ASGARI S. Strain hardening mechanisms in aged AEREX350 superalloy[J]. Materials Science and Engineering A, 2005, 398(1): 204−208. [55] SAMIEE M, ASGARI S. Influence of solution treatment on precipitation behavior of a Ni-Co alloy[J]. Scripta Materialia, 2007, 57(2): 93−96. [56] SINGH R P, DOHERTY R D. Strengthening in multiphase (MP35N) alloy: Part I. Ambient temperature deformation and recrystallization[J]. Metallurgical Transactions A, 1992, 23(1): 307−319. [57] LI B Q, SORENSEN D, STEIGAUF T. Phase transformation study on MP35N wire for lead conductor[C]//Proceedings of the Materials & Processes for Medical Devices Conference 2011. USA: ASM International, 2013: 131−138. [58] OTOMO T, MATSUMOTO H, NOMURA N, CHIBA A. Influence of cold-working and subsequent heat-treatment on Young’s modulus and strength of Co-Ni-Cr-Mo alloy[J]. Materials Transactions, 2010, 51(3): 434−441. [59] HAN G W, JONES I P, SMALLMAN R E. Direct evidence for Suzuki segregation and cottrell pinning in MP159 superalloy obtained by FEG (S) TEM/EDX[J]. Acta Materialia, 2003, 51(10): 2731−2742. Progress on strengthening mechanisms of high performance medical cobalt based alloy LI Wei-xiong1, 2, 3, XU Cheng2, 3, LI Qiong2, 4, WEI Xi-cheng1 ,YANG Li-jing2, 3, SONG Zhen-lun2, 3 (1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China; 2. Cixi Institute of Biomedical Engineering, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo 315300, China; 3. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; 4. Medtronic Neuromodulation, Minnesota 55432, USA) Abstract: MP35N alloy is a kind of high performance medical cobalt based alloy，which has good mechanical properties, corrosion resistance and good biocompatibility. It has wide application prospect in medical devices and aerospace. The mechanical properties of MP35N alloy and two kinds of strengthening processes on properties of the alloy were summarized. The strengthening mechanism of MP35N alloy was divided into four categories, and the development and current situation of different strengthening mechanisms were described. The advantages and disadvantages of different strengthening mechanisms of MP35N alloy as well as the ideas about MP35N alloy in the future research were analyzed. Key words: medical cobalt based alloy; MP35N; strengthening mechanism; ageing; cold deformation Foundation item: Project (2013B10046) supported by Industry Technology Innovation and Industrialization of Ningbo, China Received date: 2015-06-01; Accepted date: 2016-01-12 Corresponding author: SONG Zhen-lun; Tel: +86-13867853975; E-mail: songzhenlun@nimte.ac.cn (编辑 王 超)