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化暴露对耐老化AZ91合金微观结构和机械行为的影响

Pavel Konopík¹, Tomasz Bucki², Sylwia Rzepa³

¹COMTES FHT a.s., Průmyslová 995, 334 41 Dobřany, Czech Republic.

Materials (Basel, Switzerland)

|September 28, 2024

概括

这项研究通过一种新的表面处理来增强AZ91合金的性能. 经过修改的合金表现出更好的强度和柔性,与标准炼相比,具有耐用的富含的表面层.

科学领域:

材料科学材料科学材料科学
金工业是金工业的一个方面.

背景情况:

合金AZ91是各种工业中广泛使用的材料.
提高合金的机械性能和表面特性对于先进的应用至关重要.

研究的目的:

为了研究AZ91合金的复杂处理,结合老化硬化和表面层修改.
分析化度和冷却速率对产生的表面层的影响.
为了评估经过处理的合金的机械性能.

主要方法:

在AZ91合金的年龄硬化 (超和人工老化).
使用化溶液修改表面层.
在超和过程中控制冷却速度 (空气或水).
拉力测试和微结构分析.

主要成果:

形成具有可控制厚度和微观结构的富含的表面层.
与不造的AZ91合金相比,增强了拉伸强度和延伸.
机械性能与标准T6炼AZ91合金相提并论.
表面层与AZ91基板之间具有良好的金结合.
在较高的变形时观察到裂纹,特别是在Mg5Al2Zn2金属间相附近.

结论:

复杂的处理有效地修改了AZ91合金表面.
开发的过程提供了一个可行的途径,以提高机械性能.
表面层表现出良好的粘附性和在适度应力下的性能.

关键词:

年龄加硬变硬.涂料,涂料上的涂料.电子显微镜的电子显微镜合金合金合金测量压力/应变测量.热化学处理是一种热化学处理.

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