Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy

doi:10.1007/s12204-012-1273-1

上海交通大学学报（英文版） ›› 2012, Vol. 17 ›› Issue (3): 301-305.doi: 10.1007/s12204-012-1273-1

Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy

LI Ke (李克), WANG Fei (王飞), WANG Qian (王倩), ZHOU Nai-geng (周耐根)

(School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China)

出版日期:2012-06-30 发布日期:2012-11-15
通讯作者: LI Ke (李克) E-mail: like.1@126.com

Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy

LI Ke (李克), WANG Fei (王飞), WANG Qian (王倩), ZHOU Nai-geng (周耐根)

(School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China)

Online:2012-06-30 Published:2012-11-15
Contact: LI Ke (李克) E-mail: like.1@126.com

摘要/Abstract

摘要： The processing parameters and refining mechanism of Mg-Al alloy treated with a newly developed carbon inoculant under different conditions were investigated experimentally in this work. Results show that the finest α-Mg grain in AZ91D alloy can be obtained after processing at about 740℃, and the average grain size of α-Mg grain decreases from about 180.4 to 85.6 μm by adding mass fraction win = 1% inoculant into melt. However, no evident refinement was achieved with excessive inoculant for Mn-free Mg-9Al alloy. Scanning electron microscope (SEM) photo, energy dispersive spectroscopy (EDS) analysis on the Mn-contained intermediate phase and differential scanning calorimetry (DSC) results indicate that Mn element plays an important role in the heterogeneous nucleation of α-Mg grain. In the early stage of solidification, Al-Mn-C compound particles formed on the surface of Al4C3 nano-particles should be the potential nuclei for primary α-Mg and probably responsible for the grain refinement achieved in the carbon inoculation process.

关键词: magnesium alloy, carbon inoculant, heterogeneous nucleation

Abstract: The processing parameters and refining mechanism of Mg-Al alloy treated with a newly developed carbon inoculant under different conditions were investigated experimentally in this work. Results show that the finest α-Mg grain in AZ91D alloy can be obtained after processing at about 740℃, and the average grain size of α-Mg grain decreases from about 180.4 to 85.6 μm by adding mass fraction win = 1% inoculant into melt. However, no evident refinement was achieved with excessive inoculant for Mn-free Mg-9Al alloy. Scanning electron microscope (SEM) photo, energy dispersive spectroscopy (EDS) analysis on the Mn-contained intermediate phase and differential scanning calorimetry (DSC) results indicate that Mn element plays an important role in the heterogeneous nucleation of α-Mg grain. In the early stage of solidification, Al-Mn-C compound particles formed on the surface of Al4C3 nano-particles should be the potential nuclei for primary α-Mg and probably responsible for the grain refinement achieved in the carbon inoculation process.

Key words: magnesium alloy, carbon inoculant, heterogeneous nucleation

中图分类号:

LI Ke (李克), WANG Fei (王飞), WANG Qian (王倩), ZHOU Nai-geng (周耐根). Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy[J]. 上海交通大学学报（英文版）, 2012, 17(3): 301-305.

LI Ke (李克), WANG Fei (王飞), WANG Qian (王倩), ZHOU Nai-geng (周耐根). Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(3): 301-305.

参考文献

[1] Mordike B L, Ebert T. Magnesium propertiesapplications-potential [J]. Material Science and Engineering A, 2001, 302: 37-45.
[2] Friedrich H, Schumann S. Research for a “new age of magnesium” in the automotive industry [J]. Journal
of Materials Processing Technology, 2001, 117: 276-281.
[3] Chen Z H, Chen J H, Xia W J, et al. Development of high performance magnesium alloys by rapid solidification
[J]. Journal of Metastable and Nanocrystalline Materials, 2005, 24-25: 261-264.
[4] Liu Sheng-fa, Li Bo, Han Hui, et al. Refinement effect and mechanism of Mg-Al4C3 master alloy in AZ91D
Mg alloy [J]. The Chinese Journal of Nonferrous Metals, 2009, 19(1): 32-37 (in Chinese).
[5] Wang Chun-jian, Jin Qing-lin, Zhou Rong, et al. Effect of Mn on grain size of high-purity Mg-3Al alloys
[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(8): 1495-1500 (in Chinese).
[6] Kim Y M, Yim C M, You B S. Grain refining mechanism in Mg-Al base alloys with carbon addition [J].
Scripta Materialia, 2007, 57: 691-694.
[7] Zhang Shi-jun, Li Wen-xian, Yu Kung. Grain refinement of magnesium alloy by carbon addition [J]. Journal
of Special Casting & Nonferrous Alloys, 2002(4): 18-19 (in Chinese).
[8] Qian M, Cao P. Discussions on grain refinement of magnesium alloys by carbon inoculation [J]. Scripta
Materialia, 2005, 52: 415-419.
[9] Cao P, Qian M, Stjohn D H. Effect of manganese on grain refinement of Mg-Al based alloys [J]. Scripta
Materialia, 2006, 54: 1853-1858.
[10] Lu L, Dahle A K, Stjohn D H. Grain refinement efficiency and mechanism of aluminium carbide in Mg-
Al alloys [J]. Scripta Materialia, 2005, 53: 517-522.
[11] Liu S F, Zhang Y, Han H. Role of manganese on the grain refining efficiency of AZ91D magnesium alloy refined
by Al4C3 [J]. Journal of Alloys and Compounds,2010, 491: 325-329.
[12] Zhang M X, Kelly P M, Qian M, et al. Crystallography of grain refinement in Mg-Al based alloys [J].
Acta Materialia, 2005, 53: 3261-3270.
[13] Kainer K U. Magnesium alloys and technology [M].Weinheim: Wiley-VCH, 2003.

Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy

Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价

[1]	LIU Kai (刘凯), DONG Xianghuai *(董湘怀), SHI Wen (石文), WANG Xinbao (王新宝), WU Guohong. Investigation on Two Electrically-Assisted Forming Processes of AZ31B Magnesium Alloy Sheets[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(4): 409-416.
[2]	LU Tian-feng (卢天凤), YIN Kai-yang (尹恺阳), SUN Bing-yi (孙秉毅),DONG Qing (董晴), CHEN B. Effects of Micro-arc Oxidation Coating on Corrosion Behavior of Mg-Y-Zn in Simulated Body Fluid[J]. 上海交通大学学报（英文版）, 2012, 17(6): 668-672.
[3]	LI Da1,2 (李达), CUI Zhan-quan2 (崔占全), YANG Qing-xiang2* (杨庆祥),SUN Bing1 (孙兵), SUN. Microstructure and Property of Friction Stir Welding Joint of 7075Al and AZ31BMg[J]. 上海交通大学学报（英文版）, 2012, 17(6): 679-683.
[4]	WEN Tong (温彤), GAO Rui (郜瑞), CHEN Xia (陈霞). Influence of High Frequency Vibration on Deep Drawing Process of AZ31 Sheet at Room Temperature[J]. 上海交通大学学报（英文版）, 2012, 17(4): 456-460.
[5]	HU Xiao-dong (胡小东), JU Dong-ying (巨东英), ZHAO Hong-yang (赵红阳). Thermal Flow Simulation of Twin-Roll Casting Magnesium Alloy[J]. 上海交通大学学报（英文版）, 2012, 17(4): 479-483.