Microstructure and Dynamic Compression Properties of PM Al6061/B4C Composite

doi:10.1007/s40195-015-0315-8

Abstract

Abstract:

Aluminum 6061 matrix composite reinforced by 35 wt% B₄C particle was fabricated by power metallurgy method. Then, the as-deformed composite was tested by quasi-static (0.001 s^-1) and dynamic (760-1150 s^-1) compression experiments. The Johnson-Cook plasticity model was employed to model the flow behavior. The damage mechanism of composite was analyzed through the microstructure observations. The results showed that the B₄C particles exhibited uniform distribution and no deleterious reaction product Al₄C₃ was found in the composite. Al6061/B₄C composite showed high yield strength, moderate strain rate sensitivity and strain hardening under the dynamic loading, and a constitutive model under dynamic compression was established based on Johnson-Cook model, and accorded well with experimental results. The microstructure damage was dominated by particle fracture and interface debonding, and the dislocation was observed in the composite at a higher strain rate.

Key words: Power metallurgy, Dynamic compression, Johnson-Cook model, Al6061/B4C composite

Hong-Sheng Chen, Wen-Xian Wang, Hui-Hui Nie, Yu-Li Li, Qiao-Chu Wu, Peng Zhang. Microstructure and Dynamic Compression Properties of PM Al6061/B₄C Composite[J]. Acta Metallurgica Sinica (English Letters), 2015, 28(10): 1214-1221.

Figures/Tables 15

Table 1 Chemical composition of Al6061 alloy powder (wt%)

Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Al
0.6	0.7	0.25	0.15	0.8	0.1	0.25	0.15	Bal.

Table 2 Chemical composition of B4C powder (wt%)

B	C	Ca	Fe	Si	F	Cl
80.0	18.1	0.3	1.0	0.5	0.025	0.075

Fig. 1 SEM images and particle size distribution curves of Al6061 a, b and B4C c, d powders

Table 3 Experimental parameters of ball milling

Milling media	Ball size (mm)	Weight ratio of ball to powder	Milling speed (r min^-1)	Milling time (min)
ZrO₂	10 and 6	15:1	1500	30

Table 4 Relative density and average microhardness values of Al6061/B4C at different period of production process

Process	Relative density (%)	Average microhardness (HV_0.5)
Vacuum hot pressing	85.44 ± 1.2	121.8
Hot extrusion	98.67 ± 0.4	148.4
Hot rolling	99.43 ± 0.4	157.3

Fig. 2 SEM images of B4C/Al6061 composite a and the interface between B4C and 6061Al b

Fig. 3 XRD patterns of Al6061 a, B4C b and B4C/Al6061 c

Fig. 4 Engineering stress-strain curve of the B4C/6061Al composites upon quasi-static compression under strain rate of 0.001 s-1

Fig. 5 Engineering stress-strain curves of the B4C/6061Al composites upon dynamic loading compression under different strain rates in the range of 760-1150 s-1

Fig. 6 Relationship between the maximum flow stress and strain rate of Al6061/B4C composites

Fig. 7 Experimental and predicted engineering stress-strain curves of Al6061/B4C composites at different strain rates

Fig. 8 SEM images of Al6061/B4C composites after compression under different strain rates of 0.001, 760 and 1150 s-1

Fig. 9 The magnified SEM images of Al6061/B4C composites after compression under the strain rate of 1150 s-1: a particle/matrix interface debonding; b particles fracture; c particles assembling

Fig. 10 Typical TEM micrograph of dynamic compressed specimen

Fig. 11 Schematic illustration of microstructure variation under high strain rate

References 26

[1]	K.K. Deng, J.Y. Shi, C.J. Wang, X.J. Wang, Y.W. Wu, K.B. Nie, K. Wu, Compos. A 43, 1280 (2012)
[2]	Y.Z. Li, Q.Z. Wang, W.G. Wang, B.L. Xiao, Z.Y. Ma, Mater. Sci. Eng. A 620, 445 (2015)
[3]	Y.P. Huang, W.J. Zhang, L. Liang, J. Xu, Z. Chen, Chem. Eng. J. 220, 143(2013)
[4]	B. McWilliams, T. Sano, J. Yu, A. Gordon, C. Yen, Mater. Sci. Eng. A 577, 54 (2013)
[5]	P. Barick, D.C. Jana, N. Thiyagarajan, Ceram. Int. 39, 763(2013)
[6]	H. Joel, Mater. Des. 30, 323(2009)
[7]	Y.C. Feng, L. Geng, P.Q. Zheng, Z.Z. Zheng, G.S. Wang, Mater. Des. 28, 2023 (2008)
[8]	C.S. Ramesh, R. Keshavamurthy, B.H. Channabasappa, A. Abrar, Mater. Sci. Eng. A 502, 99 (2009)
[9]	B. Sivaiah, M. Saravanan, D. Ajay, J. Mater. Sci. Technol. 28, 969(2012)
[10]	K. Kalaiselvan, N. Murugan, S. Parameswaran, Mater. Des. 32, 4004(2011)
[11]	K.K. Deng, C.J. Wang, J.Y. Shi, Y.W. Wu, K. Wu, Mater. Chem. Phys. 134, 581(2012)
[12]	T. Varol, A. Canakci, S. Ozsahin, Acta Metall. Sin. (Engl. Lett.) 28, 182(2015)
[13]	A. Canakci, T. Varol, Powder Technol. 268, 72(2014)
[14]	J.J. Park, S.M. Hong, M.K. Lee, C.K. Rhee, W.H. Rhee, Nucl. Eng. Des. 282, 1(2015)
[15]	P. Zhang, Y.L. Li, W.X. Wang, Z.P. Gao, B.D. Wang, J. Nucl. Mater. 437, 350(2013)
[16]	W.H. Liu, Z.T. He, Y.Q. Chen, S.W. Tang, Trans. Nonferrous Met. Soc. China 24, 2179 (2014)
[17]	T. Varol, A. Canakci, Powder Technol. 246, 462(2013)
[18]	K. Kalaiselvan, I. Dinaharan, N. Murugan, Mater. Des. 55, 176(2014)
[19]	G. Arslan, F. Kara, S. Turan, J. Eur. Ceram. Soc. 23, 1243(2003)
[20]	J.W. Qiao, M.Y. Chu, L. Cheng, H.Y. Ye, H.J. Yang, S.G. Ma, Z.H. Wang, Mater. Lett. 119, 92(2014)
[21]	S. Rawat, S. Chandra, V.M. Chavan, S. Sharma, M. Warrier, S. Chaturvedi, J. Appl. Phys. 116, 213507(2014)
[22]	D.N. Zhang, Q.Q. Shangguan, C.J. Xie, F. Liu, J. Alloys Compd. 619, 186(2015)
[23]	N.K. Singh, E. Cadoni, M.K. Singha, N.K. Gupta, Mater. Des. 32, 5091(2011)
[24]	J. Wang, H.W. Zhang, A.M. Wang, H. Li, Acta Metall. Sin. 48, 636(2012). (in Chinese)
[25]	M.E. Ahmed, S. Mohamed, A. Mohamed Taha, P. Heinz, J. Mater. Process. Technol. 213, 1669(2013)
[26]	T. Mukai, T.G. Nieh, Y. Kawamura, A. Inoue, K. Higashi, Scr. Mater. 46, 43(2002)

Microstructure and Dynamic Compression Properties of PM Al6061/B₄C Composite

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