[1] Huang Ziqian, Li Chuanxin,. Elastoplastic response of functionally graded cemented carbidesdue to thermal loading [J]. Journal of Southeast University (English Edition), 2013, 29 (4): 463-466. [doi:10.3969/j.issn.1003-7985.2013.04.020]

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Elastoplastic response of functionally graded cemented carbidesdue to thermal loading()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 4

Page:

463-466

Research Field:

Materials Sciences and Engineering

Publishing date:

2013-12-20

Info

Title:

Elastoplastic response of functionally graded cemented carbidesdue to thermal loading

Author(s):

Huang Ziqian¹;  2;  Li Chuanxin³

¹Department of Physics, Southeast University, Nanjing 211189, China
²College of Physics and Electronic Engineering, Guangxi Teachers Education University, Nanning 530001, China
³College of Mathematics and Physics, Jingchu University of Technology, Jingmen 448000, China

Keywords:

functionally graded cemented carbides;  finite element method;  constraint factors;  elastoplastic response

PACS:

TB383

DOI:

10.3969/j.issn.1003-7985.2013.04.020

Abstract:

Finite element formulations are used to simulate the evolution of the elastoplastic response of functionally graded cemented carbides(FGCC)due to thermal loading. The geometry of specimens is an axisymmetric solid cylinder with a two-dimensional gradient. The elastoplastic constitutive relationship is developed by constraint factors. Numerical results show that compressive stresses occur in the surface zone and tensile stresses in the cobalt rich zone when the temperature drops from the initial stress-free temperature of 800 to 0 ℃. The maximum value of the surface compressive stress is 254 MPa and the maximum value of the tensile stress is 252 MPa in the cobalt rich zones. When the cobalt concentration difference in the specimens is equal to or greater than 0.3, there is pronounced plastic flow in cobalt rich zone. When the temperature heats up from 0 to 800 ℃, the total plastic strain reaches 0.001 4. Plastic flow has a significant effect on the reduction of thermal stress concentration.

References:

[1] Lengauer W, Dreyer K. Functionally graded hardmetals[J]. Journal of Alloy and Compounds, 2002, 338(1/2): 194-212.
[2] Huang Z Q, He Y H, Li P L. Finite element analysis of thermal stresses in functionally graded cemented carbides[J]. Powder Metallurgy, 2010, 53(4): 278-284.
[3] Narasimhan K, Boppana S P, Bhat D G. Development of a graded TiCN coating for cemented carbide cutting tools-a design approach[J]. Wear, 1995, 188(1/2): 123-129.
[4] Su Y L, Yao S H, Wei C S, et al. Analysis and design of a WC milling cutter with TiCN coating[J]. Wear, 1998, 215(1/2): 59-66.
[5] Fan P, Fang Z Z, Guo J. A review of liquid phase migration and methods for fabrication of functionally international graded cemented tungsten carbide[J]. International Journal of Refractory Metals and Hard Materials, 2013, 36: 2-9.
[6] Bull S J, Bhat D G, Staia M H. Properties and performance of commercial TiCN coating. Part I: coating architecture and hardness modeling[J]. Surf Coat Tech, 2003, 163-164: 499-506.
[7] Huang Z Q, He Y H, Cai H T. Finite element analysis of thermal residual stresses at cemented carbide rock drill buttons with cobalt-gradient structure[J]. Trans Nonferrous Met Soc, 2008, 18(3): 660-664.
[8] Giannakopoulos A E, Suresh S, Finot M, et al. Elastoplastic analysis of thermal cycling: layered materials with compositional gradients[J]. Acta Metall Mater, 1995, 43(4): 1335-1354.

Memo

Memo:

Biographies: Huang Ziqian(1972—), male, doctor, huangziqian2004@163.com; Li Chuanxin(1965—), male, associate professor, tlchhai@sina.com.cn.
Foundation items: The National Natural Science Foundation of China(No.50323008, 31070517), Scientific Research Foundation of Guangxi Education Department(No.201203YB097).
Citation: Huang Ziqian, Li Chuanxin. Elastoplastic response of functionally graded cemented carbides due to thermal loading[J].Journal of Southeast University(English Edition), 2013, 29(4):463-466.[doi:10.3969/j.issn.1003-7985.2013.04.020]

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