Yield Strength and Strain Hardening Exponent of Metal Material Evaluated by Micro-load Continuous Ball Indentation Method

JIN Zhuang; ZHAO Jianping

doi:10.11973/jxgccl201801015

Materials and Mechanical Engineering > 2018 > 42(1): 72-77. > DOI: 10.11973/jxgccl201801015

JIN Zhuang, ZHAO Jianping. Yield Strength and Strain Hardening Exponent of Metal Material Evaluated by Micro-load Continuous Ball Indentation Method[J]. Materials and Mechanical Engineering, 2018, 42(1): 72-77. DOI: 10.11973/jxgccl201801015

Citation:

PDF (3096 KB)

Yield Strength and Strain Hardening Exponent of Metal Material Evaluated by Micro-load Continuous Ball Indentation Method

School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China

More Information

Received Date: November 13, 2016
Revised Date: October 09, 2017

Graphical Abstract

Abstract

Abstract

The method of testing mechanical properties of materials by existing ball indentation was improved and the load-depth curve of metal material was obtained by a continual cycle loading method instead of multipoint single loading method. The dimensionless functions and related apparent strain function during indenter pressing into metal material were fitted by dimensional analysis and finite element anslysis, and the elastic-plastic parameters and stress-strain curves of different metal materials were obtained and verified by the test data. The results show that the error of elastic-plastic parameters between the caculation results obtained by this method and the test data was about 5%. The stress-strain curves were in good agreement.
- spherical indentation method,
- finite element analysis,
- yield strength,
- strain hardening exponent

FullText(HTML)

References (15)

References

[1]	关凯书,邹镔,伍声宝. 连续球压痕法评价钢的塑性[J]. 机械工程材料, 2016,40(9):18-21.
[2]	伍声宝,徐彤,喻灿,等.采用球压痕法测16MnR钢的拉伸性能[J].机械工程材料, 2015,39(1):82-85.
[3]	FIELD J S, SWAIN M V. Determining the mechanical properties of small volumes of material from submicrometer spherical indentations[J]. Journal of Materials Research, 1995, 10(1):101-112.
[4]	THAI-HOAN P, JUNG J K, SEUNG-EOCK K. Estimating constitutive equation of structural steel using indentation[J]. International Jounal of Mechanical Sciences, 2015, 90:151-161.
[5]	KUCHARSKI S, MROZ Z. Identification of plastic hardening parameters of metals from spherical indentation tests[J]. Journal of Engineering Materials &Technology,2001,318(1/2):65-76.
[6]	马增胜,周益春,龙士国. 纳米压痕法表征金属薄膜材料的力学性能[D].湘潭:湘潭大学,2011:58-75.
[7]	HERBERT E G, PHARR G M, OLIVER W C, et al. On the measurement of stress-strain curves by spherical indentation[J].Mrs Online Proceedings Library,2001,s398/399:331-335.
[8]	CAO Y P, LU J. A new method to extract the plastic properties of metal materials from an instrumented spherical indentation loading curve[J]. Acta Materialia, 2004,52:4023-4032.
[9]	DAO M, CHOLLACOOP N, VLIET K J V, et al. Computational modeling of the forward and reverse problems in instrumented sharp indentation[J]. Acta Materialia, 2001,49(19):3899-3918.
[10]	崔航,陈怀宁,陈静,等. 球形压痕法评价材料屈服强度和应变硬化指数的有限元分析[J]. 金属学报, 2009,45(2):189-194.
[11]	CLLOLLAEOOP N W. Computational and experimental study of instrumented indentation[M].[S.l.]:Massachusetts Institute of Technology, 2004.
[12]	CHENG Y T, CHENG C M. Can stress-strain relationships be obtained from indentation curves using conical and pyramidal indenters[J]. Journal of Materials Research, 1999, 14(9):3493-3496.
[13]	HYUNGYIL L, JIN H L, PHARR G M. A numerical approach to spherical indentation techniques for material property evaluation[J]. Journal of the Mechanics and Physics of Solids, 2005,53(9):2037-2069.
[14]	张帆, 黄克智, 黄永刚, 等. 摩擦因素对微压痕实验的影响[J]. 工程力学, 2006, 23(1):1-5.
[15]	KIM S H, LEE B W, CHOI Y, et al. Quantitative determination of contact depth during spherical indentation of metallic materials-A FEM study[J]. Materials Science and Engineering, 2006,415(1/2):59-65. 欢迎来稿欢迎订阅欢迎刊登广告

Cited By

Get Citation

PDF

XML

Article views (8) PDF downloads (0)

Turn off MathJax

Article Contents

Abstract

References

Yield Strength and Strain Hardening Exponent of Metal Material Evaluated by Micro-load Continuous Ball Indentation Method

Abstract

References

Catalog

Export File

Citation

Format

Content