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Vacuum sintering and solution plus aging heat treatment of β eutectoid bearing binary Ti alloy
International Journal of Refractory Metals & Hard Materials ( IF 4.2 ) Pub Date : 2020-04-25 , DOI: 10.1016/j.ijrmhm.2020.105267
Y. Alshammari , F. Alqattan , F. Yang , L. Bolzoni

Binary Ti alloys bearing β eutectoid stabilisers (i.e. Cu and Mn) were produced by powder blending followed by cold pressing and vacuum sintering as this is identified as an alternative cost-effective manufacturing method to lower the cost of Ti alloys. The sintered Ti-Cu and Ti-Mn alloys were subsequently heat treated via a solution treatment in the β field plus aging. The aim is to investigate a cheap and efficient method to change and tailor the mechanical behaviour via microstructural control. Heat treating the binary Ti-Cu and Ti-Mn alloys slightly affects their relative density and significantly changes the nature of the phases composing each material. This includes the transformation of the typical lamellar structure into lamellar hypo-eutectoid structures as well as the formation of metastable phases. The response to the heat treatment and the phases formed are clearly influenced by the chemistry of the β eutectoid bearing binary Ti alloys. Performance comparable to those of thermomechanically hot forged alloys are nonetheless achieved via a simple heat treatment procedure.



中文翻译:

β共析二元钛合金的真空烧结及固溶加时效热处理

通过粉末共混,然后进行冷压和真空烧结来生产带有β共析稳定剂(即Cu和Mn)的二元Ti合金,因为这被认为是降低Ti合金成本的另一种具有成本效益的制造方法。随后,通过在β场中进行固溶处理并进行时效处理,对烧结的Ti-Cu和Ti-Mn合金进行热处理。目的是研究一种廉价且有效的方法,以通过微结构控制来更改和调整机械行为。对二元Ti-Cu和Ti-Mn合金进行热处理会稍微影响其相对密度,并显着改变组成每种材料的相的性质。这包括将典型的层状结构转变为层状次共析结构以及形成亚稳相。对热处理的反应和所形成的相显然受到含β共析二元钛合金化学性质的影响。尽管如此,通过简单的热处理程序即可获得与热机械锻造合金相当的性能。

更新日期:2020-04-25
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