Effect of cooling rate on β →α transformation during quenching of a Zr-0.85Sn-0.4Nb-0.4Fe-0.1Cr-0.05Cu alloy
Source abstract
Abstract
The effect of β → α cooling rate during quenching on a new Zr-Sn-Nb-Fe-Cr-Cu alloy is reported. The microstructure evolution is well characterized by electron channeling contrast (ECC) imaging and transmission electron microscopy (TEM) techniques. The results show that specimens cooled by water, liquid nitrogen, air and furnace from β-phase present martensitic, coarse basket-weave, parallel-plate and lenticular structure, respectively. Residual β phase is detected by performing electron diffraction and composition analysis in the furnace cooled specimen. Micro hardness values of specimens decrease while the width of α laths increase with the cooling rate decreasing. The preliminarily established quantitative relationship among the cooling rate, microstructure and mechanical properties will shed light on the microstructure control and property optimization.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Titanium Alloys Microstructure and Properties · High Temperature Alloys and Creep
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