PLASTIC STRAIN HETEROGENEITY AND WORK HARDENING OF Ni SINGLE CRYSTALS

doi:10.11900/0412.1961.2015.00085

Acta Metall Sin

2015, Vol. 51

Issue (12): 1457-1464 DOI: 10.11900/0412.1961.2015.00085

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PLASTIC STRAIN HETEROGENEITY AND WORK HARDENING OF Ni SINGLE CRYSTALS

Xiaogang WANG(

),Chao JIANG,Xu HAN

State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University,Changsha 410082

Cite this article:

Xiaogang WANG,Chao JIANG,Xu HAN. PLASTIC STRAIN HETEROGENEITY AND WORK HARDENING OF Ni SINGLE CRYSTALS. Acta Metall Sin, 2015, 51(12): 1457-1464.

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Abstract

Metals exhibit inhomogeneous deformation features under plastic strain, leading to the appearance and evolution of the deformation bands. The quantitative characterization of this effect is significant for an in-depth understanding of the plastic deformation and strengthening mechanisms of metals. In this work, the full-field strain information are obtained using digital image correlation method, and the work hardening behaviour in Ni single crystals is investigated from the angle of strain heterogeneity. First, a digital image correlation method, adapted for characterizing single crystal deformation, is proposed for the precise evaluation of strain field. The tensile test results show that the plastic strain in Ni single crystal manifests a distinct localization characteristic, which is closely linked to the slip band formation and development process. Based on the characteristics of the strain field evolution, 3 deformation regimes can be determined, which demonstrate a one-to-one correspondence to the 3 work hardening stages of the material. Some reasonable interpretations of their correlation are proposed within the framework of dislocation theories, which are verified through the experimental observations on the microstructure evolution of the material.

Key words: Ni single crystal work hardening plastic deformation digital image correlation heterogeneity

Fund: Supported by National Natural Science Foundation of China (No.11172096) and Foundation for the Author of National Excellent Doctoral Dissertation of Higher Education from the Ministry of Education of China (No.201235)

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https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00085 OR https://www.ams.org.cn/EN/Y2015/V51/I12/1457

Fig.1 Schematic of geometric dimensions of the specimen (unit: mm)

Fig.2 Surface morphology of the specimen after deformation obtained by digital camera

Fig.3 Axial (a) and transverse (b) displacement fields in the final deformation state

Fig.4 Axial stress-strain curve and equivalent von Mises strain fields (insets) for the labeled points

Fig.5 Representative equivalent von Mises strain (e_eq) fields for the deformation regimes I (a), Ⅱ (b) and ⅡI (c)

Fig.6 Distribution of ε_eq by band under the deformation regimes I, Ⅱ and ⅡI

Fig.7 Evolution of sensitive index (s_B) during the tensile test and determination of the 3 deformation regimes

Fig.8 Shear stress-strain (t-g) and work hardening rate-strain (q-g) curves and work hardening stages

Fig.9 Dislocation densities under different strain levels (r_w—density of dislocation walls, r_c—density of dislocation cells, r_t—overall dislocation density of material)

[1]	Taylor G. Proc Roy Soc, 1934; 145A: 362
[2]	Schmid E, Boas I W. Plasticity of Crystals. London: Chapman and Hall Ltd., 1950: 8
[3]	Kocks U, Mecking H. Prog Mater Sci, 2003; 48: 171
[4]	Sevillano J G. In: Mughrabi H ed., Plastic Deformation and Fracture of Materials. Weinheim: VCH, 1993: 23
[5]	Li X W, Wang Z G, Sun S G, Wu S D, Li S X, Li G Y. Acta Metall Sin, 1998; 34: 552
[5]	(李小武, 王中光, 孙守光, 吴世丁, 李守新, 李广义. 金属学报, 1998; 34: 552)
[6]	Zhang Z F, Duan Q Q, Wang Z G. Acta Metall Sin, 2005; 41: 1143
[6]	(张哲峰, 段启强, 王中光. 金属学报, 2005; 41: 1143)
[7]	Magid K R, Florando J N, Lassila D H, LeBlanc M M, Tamura N, Morris J W. Philos Mag, 2009; 89: 77
[8]	Shade P A, Wheeler R, Choi Y S, Uchic M D, Dimiduk D M, Fraser H L. Acta Mater, 2009; 57: 4580
[9]	Takamura J. Bull Jpn Inst Met, 1973; 12: 505
[10]	Takamura J. Trans Jpn Inst Met, 1987; 28: 165
[11]	Chu T C, Ranson W F, Sutton M A. Exp Mech, 1985; 25: 232
[12]	Sutton M A, Orteu J J, Schreier H. Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts, Theory and Applications. New York: Springer, 2009: 81
[13]	Wang H W, Kang Y L, Xie H P. Adv Mech Sin, 2005; 35: 195
[13]	(王怀文, 亢一澜, 谢和平. 力学进展, 2005; 35: 195)
[14]	Pan B. PhD Dissertation, Tsinghua University, Beijing, 2007
[14]	(潘兵. 清华大学博士学位论文, 北京, 2007)
[15]	Grediac M, Hild F. Full-Field Measurements and Identification in Solid Mechanics. New York: Wiley, 2012: 157
[16]	Florando J N, LeBlanc M M, Lassila D H. Scr Mater, 2007; 57: 537
[17]	Zhao Z, Ramesh M, Raabe D, Cuiti?o A M, Radovitzky R. Int J Plast, 2008; 24: 2278
[18]	Efstathiou C, Sehitoglu H, Lambros J. Int J Plast, 2010; 26: 93
[19]	Field D P, Magid K R, Mastorakos I N, Florando J N, Lassila D H, Morris J W. Philos Mag, 2010; 90: 1451
[20]	Du H F, Zeng P, Zhao J Q, Lei L P, Fang G, Qu T M. Acta Metall Sin, 2013; 49: 17
[20]	(杜泓飞, 曾攀, 赵加清, 雷丽萍, 方刚, 瞿体明. 金属学报, 2013; 49: 17)
[21]	Cai Y L, Fu S H, Wang Y H, Tian C G, Gao Y, Cheng T, Zhang Q C. Acta Metall Sin, 2014; 50: 1491
[21]	(蔡玉龙, 符师桦, 王玉辉, 田成刚, 高越, 程腾, 张青川. 金属学报, 2014; 50: 1491)
[22]	Tasan C C, Diehl M, Yan D, Zambaldi C, Shanthraj P, Roters F, Raabe D. Acta Mater,?2014; 81: 386
[23]	Zhang Y J. A Course of Computer Version. Beijing: Posts & Telecommunications Press, 2011: 189
[23]	(章毓晋. 计算机视觉教程. 北京: 人民邮电出版社, 2011: 189)
[24]	Efstathiou C, Sehitoglu H. Acta Mater, 2010; 58: 1479
[25]	Besnard G, Hild F, Roux S. Exp Mech, 2006; 46: 789
[26]	Lubliner J. Plasticity Theory. New York: Macmillan Publishing, 1990: 198
[27]	Hirsch P B. Electron Microscopy of Thin Crystals. London: Butterworths, 1965: 286

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