通过硬度测量、拉伸和成形性试验,并采用透射电镜、扫描电镜及金相分析,研究了wMg/wSi和wMg/wCu值对几种6000系汽车板铝合金时效行为、力学性能及成形性的影响.结果表明:在时效初期,对于硅过剩合金,其硬度和强度随wMg/wSi和wMg/wCu值增大而提高;对于镁过剩合金,其比值过大时则硬度和强度显著下降.但伸长率及埃利克森值随比值增大均为降低.此外,增大wMg/wCu值会促进合金时效初期的硬化速度,但wMg/wCu过大,初始硬度大为降低,反而不利于合金的时效硬化性.
参考文献
| [1] | Zhuang L;Haan R DE;Bottema J et al.Improvement in bake hardening response of Al-Si-Mg alloys[J].Materials Science Forum,2000,331-337:1309-1314. |
| [2] | J. Bottema;C. Lahaye;R. Baartman;L. Zhuang;P. De Smet;F. Schoepen .Recent Developments in AA6016 Aluminium Type Body Sheet Product[J].SAE transactions,1998(5):900-907. |
| [3] | Mahoto Takeda;Fumiyoshi Ohkubo .Precipitation behavior of Al-Mg-Si ternary alloys[J].Materials Science Forum,1996,217-222:815-820. |
| [4] | Kamat R G;Butler J F;Murtha Jr et al.Alloy 6022-T429for automotive sheet applications[J].Materials Science Forum,2002,396-402:1591-1596. |
| [5] | Gupta A K;Bookbinder J B;Sang H S et al.Role of hardening solutes on the microstructure and strength of AA6111 automotive alloy[J].Materials Science Forum,2000,331-337:1297-1308. |
| [6] | Hirth S M;Marshall G J;Court S A et al.Effects of Si on the aging behaviour and formability of aluminium alloys based on AA6016 materials[J].Science and Engineering,2001,A319-321:452-456. |
| [7] | Gupta AK.;Court SA.;Lloyd DJ. .Precipitation hardening in Al-Mg-Si alloys with and without excess Si[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):11-17. |
| [8] | D. H. Lee;J. H. Park;S. W. Nam .Enhancement of mechanical properties of Al-Mg-Si alloys by means of manganese dispersoids[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1999(4):450-455. |
| [9] | Matsuda K;Taniguchi S;Kido K et al.Effect of addition of copper and chromium on precipitation in Al-Mg-Si alloys[J].Materials Science Forum,2002,396-402:941-946. |
| [10] | W.F.Miao;D.E.Laughlin .Effects of Cu content and preaging on precipitation characteristics in aluminum alloy 6022[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2000(2):361-371. |
| [11] | M. MURAYAMA;K. HONO;W.F. MIAO .The Effect of Cu Additions on the Precipitation Kinetics in an Al-Mg-Si Alloy with Excess Si[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2001(2):239-246. |
| [12] | Zhen L.;Kang SB.;Kim HW.;Fei WD. .PRECIPITATION BEHAVIOUR OF AL-MG-SI ALLOYS WITH HIGH SILICON CONTENT[J].Journal of Materials Science,1997(7):1895-1902. |
| [13] | D.J. Chakrabarti;Yingguo Peng;David E. Laughlin .Precipitation In Al-Mg-Si Alloys with Cu Additions and the Role of the Q' and Related Phases[J].Materials Science Forum,2002(Pt.2):857-862. |
| [14] | Gupta A K;Marois P H;Lloyd DJ .Study of the precipitation kinetics in a 6000 series automotive sheet material[J].Materials Science Forum,1996,217-222:801-808. |
| [15] | 关绍康,姚波,王迎新.Ti和Ce对AlMgSi基合金板材成形性能的影响[J].中国有色金属学报,2002(04):759-763. |
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