Strain Softening and Hardening Behavior in AZ61 Magnesium Alloy

材料科学技术（英文）, 2004, 20(6): 691-693.

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1.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

2.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

3.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

4.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

5.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

6.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200030, China

基金项目: This work was supported by the Ministry of Science and Technology (High technology plan) of China under(2001AA310301)

Strain Softening and Hardening Behavior in AZ61 Magnesium Alloy

Keywords： AZ61 Mg alloy

The deformation behavior of AZ61 Mg alloy during hot deformation has been investigated in wide temperature and strain rate range by a Gleeble simulator. Specimens are deformed in compression in the temperature range of 523～673 K and at strain rates of 0.001～1 s-1. It is found that the flow curves exhibit a peak and then decrease towards steady-state of classical DRX, which decrease with rising temperature and decreasing strain rate. The deformation behavior of the specimens can be attributed to the occurrence of strain hardening and softening. As stress decreases, the strain hardening rate declines at a fast rate when temperature rises or strain rate decreases. The shapes of θ-σ curves indicate some important features such as subgrain formation, the critical stress, the peak stress and steady stress. The onset of DRX can be determined by the point of inflection on θ-σ or Inθ-σ curves.

参考文献

[1]	LMordike .[J].轻金属,2001,51(01):2.
[2]	SIIon;F J Humphrys;S H White .[J].ACTA MATERIALIA,1982,30:909.
[3]	MMauchi;K Ameyama;H Iwasaki;K Higashi .[J].Acta Materialia,1999,47:2047.
[4]	TMorhri;M Mabuchi;M Nakamura;T Asahina H Iwasaki T Aizawa and K Higashi .[J].Materials Science and Engineering,2000,290:139.
[5]	KMathis;Z Trojanova;P Lukac .[J].Materials Science and Engineering,2002,234:141.
[6]	HJMcQueen;M Myshlav;M Sauerbor;A Mwembela.[A].Magnesium Technology,2000:355.
[7]	NVRaviKumar;J J Blandin;C Desrayaud;F Montheillet and M Suery .[J].Materials Science and Engineering,2003,359:150.
[8]	MRarnett .[J].Journal of Light Metals,2001,1(03):167.
[9]	A. GALIYEV;R. KAIBYSHEV;G. GOTTSTEIN .CORRELATION OF PLASTIC DEFORMATION AND DYNAMIC RECRYSTALLIZATION IN MAGNESIUM ALLOY ZK60[J].Acta materialia,2001(7):1199-1207.
[10]	KMatsuara;Y Miyahara;Z Horita;T G Langdon .[J].Acta Metallurgy,2003,51:3073.
[11]	X wu;Y Liu .[J].Scripta Materialia,2002,46:269.
[12]	JCTan;M J Tan .[J].Materials Science and Engineering,2003,339:124.
[13]	OSitdikov;R Kaibyshev;T Sakai .[J].Materials Science Forum,2003,521:419.
[14]	H.J. McQUEEN .Elevated-Temperature Deformation at Forming Rates of 10~(-2) to 10~2s~(-1)[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2002(2):345-362.
[15]	AMwemela;E Konopleva;H J McQueen .[J].Scripta Materialia,1997,37:1789.
[16]	NDRyan;HJMcQueen .[J].Canadian Metallurgical Quarterly,1990,29:147.
[17]	EIPoliakandJJJonas .[J].Acta Materialia,1996,44:127.
[18]	SLSemiatinandJJJonas .In Formability and Workability of Metals[Z].ASM Metal Park Ohio,1984.

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Strain Softening and Hardening Behavior in AZ61 Magnesium Alloy

参考文献