Characteristics of Plasticity and Microstructure of Hot Forming Magnesium Alloys Mg-Al-Zn Type / Charakterystyki Plastycznosci I Mikrostruktura Odkształcanych Na Goraco Stopów Magnezu Typu Mg-Al-Zn

Archives of Metallurgy and Materials

R. Sliwa¹  D. Kuc²  P. Kawulok³  I. Schindler³  E. Hadasik³ 

[1] RZESZOW UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING AND AERONAUTICS, 35-959 RZESZÓW, 8 POWSTANCÓW WARSZAWY AV., POLAND;SILESIAN UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS ENGINEERING AND METALLURGY, 40-019 KATOWICE, 8 KRASINSKIEGO STR., POLAND;VSB – TECHNICAL UNIVERSITY OF OSTRAVA, FACULTY OF METALLURGY AND MATERIALS ENGINEERING, 17. LISTOPADU 15, 708 33 OSTRAVA – PORUBA, CZECH REPUBLIC

关键词: Keywords: magnesium alloy;    research of plasticity;    microstructure;    dynamic recrystallization;    activation energy;   

DOI  :  10.2478/v10172-012-0166-5

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The paper presents analysis of plasticity characteristics and microstructure of magnesium alloys for hot plastic treatment with different aluminium content (3÷8%). Tests were conducted for assessment of susceptibility of tested alloys to hot plastic deformation. A tensile test was run in temperature from 250 to 450°C. Based on the results, ultimate tensile strength (UTS) and reduction of area (Z) were determined for samples. Conducted compression tests allowed to specify the flow stress and microstructure changes after deformation. The activation energy in hot forming was determined for investigated alloys. The parameters of the process where flow is significantly influenced by twin formation in microstructure were determined. A varied plasticity of tested alloys was found depending on aluminium content. Test results will be useful in development of forging technology of selected construction elements which serve as light substitutes for currently used materials.

【 授权许可】

Unknown