Spheroidizing Behavior and Spheroidizing Kinetics of W-phase During Solid-Solution Treatment in Mg-Zn-Y-Mn-(B) Alloys

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2017,（5）
• 页码范围: 464-469
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s40195-016-0520-0

摘要

The spheroidizing mechanism of W-phase in the Mg-Zn-Y-Mn-(B) alloys during solid-solution treatment was investigated by using kinetic methodologies.The microstructure and mechanical properties of heat-treated Mg94Zn2.5-Y2.sMn1 alloy containing 0.003 wt％ B were compared with heat-treated Mg94Zn2.5Y2.5Mn1 alloy.The heat-treated Mg94Zn2.5Y2.5Mn1 alloy with 0.003 wt％ B contained fine and uniform W-phase particles,which exhibited optimal mechanical performance.The ultimate tensile strength,yield strength and elongation were 287.7,125.5 MPa and 21.1％,respectively.