J Shanghai Jiaotong Univ Sci

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (6): 643-648.doi: 10.1007/s12204-012-1338-1

• Articles •     Next Articles

Ignition-Proof Properties of a High-Strength Mg-Gd-Ag-Zr Alloy

Ignition-Proof Properties of a High-Strength Mg-Gd-Ag-Zr Alloy

WU Yu-juan1,2 (吴玉娟), PENG Li-ming1,2* (彭立明), ZHAO Su3 (赵素),LI De-jiang1,2* (李德江), HUANG Fei1,2 (黄飞), DING Wen-jiang1,2 (丁文江)   

  1. (1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiaotong University, Shanghai 200240, China; 2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China; 3. School of Mechanical Engineering, Shanghai Dianji University, Shanghai 200240, China)
  2. (1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiaotong University, Shanghai 200240, China; 2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China; 3. School of Mechanical Engineering, Shanghai Dianji University, Shanghai 200240, China)
  • Online:2012-12-31 Published:2012-12-30
  • Contact: PENG Li-ming1,2* (彭立明), LI De-jiang1,2* (李德江) E-mail: plm616@sjtu.edu.cn; lidejiang@sjtu.edu.cn

Abstract: A high-strength Mg-15.3Gd-1.8Ag-0.3Zr (GQ152K, mass fraction) alloy was prepared by conventional ingot metallurgy process. The solution and aging (denoted as T6) treated alloy exhibits remarkable mechanical properties with ultimate tensile strength of 421MPa and tensile yield strength of 309MPa. It has higher igniting temperature of 1 208 K. Moreover, it can stand against flame at 1 203K for over 6min in vertical burning tests, and its flammability behavior is very similar to that of 6101Al alloy. Vertical burning tests appear to be able to directly study the flammability behavior of Mg alloys and it appears to be a good approach to study the flammability behavior of Mg alloys in an aircraft fire accident.

Key words: GQ152K alloy| flammability behavior| vertical burning test| igniting temperature

摘要： A high-strength Mg-15.3Gd-1.8Ag-0.3Zr (GQ152K, mass fraction) alloy was prepared by conventional ingot metallurgy process. The solution and aging (denoted as T6) treated alloy exhibits remarkable mechanical properties with ultimate tensile strength of 421MPa and tensile yield strength of 309MPa. It has higher igniting temperature of 1 208 K. Moreover, it can stand against flame at 1 203K for over 6min in vertical burning tests, and its flammability behavior is very similar to that of 6101Al alloy. Vertical burning tests appear to be able to directly study the flammability behavior of Mg alloys and it appears to be a good approach to study the flammability behavior of Mg alloys in an aircraft fire accident.

关键词: GQ152K alloy| flammability behavior| vertical burning test| igniting temperature

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