Acta Metall Sin  2005, Vol. 41 Issue (9): 933-939     DOI:

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EFFECTS OF Ca ADDITION ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-5Al-0.4Zn BASED CASTING ALLOY

YANG Guangyu; HAO Qitang; JIE Wanqi; JIA Wenping; HE Zhi

College of Materials Science and Engineering; Northwestern Polytechnical University; Xi'an 710072

YANG Guangyu; HAO Qitang; JIE Wanqi; JIA Wenping; HE Zhi. EFFECTS OF Ca ADDITION ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-5Al-0.4Zn BASED CASTING ALLOY. Acta Metall Sin, 2005, 41(9): 933-939 .

Abstract References Related Articles Recommended Metrics Download:  PDF(422KB)  Export:  BibTeX | EndNote (RIS)       Abstract  In the sand-casting magnesium alloys Mg-5Al-0.4Zn-0.2Mn-Sr-Ti-xCa , existed α-Mg, (α + Al2Ca) eutectic and Mg17Al12 when x=0.37, 0.70, 0.93, 1.69, or α-Mg and (α+(Mg, Al)2Ca) eutectic when x=2.93. With increasing x, the room temperature mechanical properties (σb, δ) of the alloys decreased, meanwhile the strength at 200 ℃ increased first and then decreased slightly, and the elongation decreased rapidly. The yield strength at 200 ℃ (σ0.2, 200 ℃) of the alloys was greatly improved with the increase of x value. DSC analysis proved that the thermal stability of Mg17Al12 phase was improved by dissolution of Ca. The grain boundary strength at 200 ℃ was improved through the formation of the Al2Ca or (Mg, Al)2Ca phases at the grain boundary. TEM analysis shows that the dislocations slip not only at the basal slip plane (0001), but also at the (10-10) prismatic slip plane and (-1-121) pyramidal slip plane at 200 ℃. The dislocation can be piled up by Al2Ca phases at the grain boundary resulting in the higher yield strength of the alloy containing Ca than those without Ca at 200 ℃. Key words:  casting magnesium alloy      mechanical property      grain boundary strength       Received:  31 January 2005      ZTFLH:  TG146.4   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors YANG Guangyu HAO Qitang JIE Wanqi JIA Wenping HE Zhi URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2005/V41/I9/933 [1] Brulower P M. Die Cast Eng, 1997; 41: 68 [2] Polmear I J. Mater Sci Technol, 1994; 10: 1 [3] Lou A A. Int Mater Rev, 2004; 49: 13 [4] Mercer R. SAE Technol Paper Ser, 900788, 1990: 17 [5] Mordlike B L. J Mater Proc Technol, 2001; 117: 391 [6] Luo A A, Balogh M P, Powell B R. Metall Mater Trans, 2002; 33A: 567 [7] Mihriban O P, Eric B, Pierre L. J Adv Mater, 2003; 35: 32 [8] Yang G Y, Hao Q T, Jie W Q. Rare Met Mater Eng, 2005; 34: 380 (杨光昱,郝启堂,介万奇．稀有金属材料与工程, 2005;34: 380) [9] Zeng X Q, Wang Q D, Lu Y Z, Ding W J, Zhu Y P, Zhai C Q, Lu C. Mater Mech Eng, 2001; 25(5): 15 (曾小勤,王渠东,吕宜振,丁文江,朱燕萍,翟春泉,卢晨． 机械工程材料,2001;25(5):15) [10] Ninomiya R, Ojiro T, Kubota K. Acta Metall Mater, 1995; 43: 669 [11] Min X G, Sun Y S, Du W W, Xue F. J Southeast Univ, 2002; 32: 409 (闵学刚,孙扬善,杜温文,薛烽．东南大学学报,2002;32: 409) [12] [13] Hu G X, Qian M G. Metallography. Shanghai: Shanghai Science and Technology Publishers, 1980: 278 (胡赓祥,钱苗根．金属学．上海:上海科学技术出版社,1980: 278) [14] Raynor G V. The Physical Metallurgy of Magnesium and Its Alloys. Oxford: Pergamon, 1959: 103 [15] Lu S S, Gu K D, Zheng L S. Foundry and Melting of Nonferrous Alloys. Beijing: National Defence Industry Press, 1983: 82 (陆树荪,顾开道,郑来苏．有色铸造合金及熔炼．北京:国防 工业出版社,1983:82) [16] Matucha K H. Structure and Properties of Nonferrous Alloys. Vol.8, Weinheim, Germany: VCH Verlagsgesellschaft mbH, 1996: 1268 [1] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [2] ZHENG Liang, ZHANG Qiang, LI Zhou, ZHANG Guoqing. Effects of Oxygen Increasing/Decreasing Processes on Surface Characteristics of Superalloy Powders and Properties of Their Bulk Alloy Counterparts: Powders Storage and Degassing[J]. 金属学报, 2023, 59(9): 1265-1278. [3] ZHANG Leilei, CHEN Jingyang, TANG Xin, XIAO Chengbo, ZHANG Mingjun, YANG Qing. Evolution of Microstructures and Mechanical Properties of K439B Superalloy During Long-Term Aging at 800oC[J]. 金属学报, 2023, 59(9): 1253-1264. 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