Microstructural verification of the theoretically predicted morphologies of the NiAl-Cr pseudo-binary alloy systems and NiAl-Cr eutectic structure modification by Mo addition

被引：7

作者：

Mathiou, C. ^{[1
]}

Giorspyros, K. ^{[1
]}

Georgatis, E. ^{[1
]}

Karantzalis, A. E. ^{[1
]}

机构：

[1] Univ Ioannina, Dept Mat Sci & Engn, Ioannina, Greece

来源：

SN APPLIED SCIENCES | 2019年 / 1卷 / 10期

关键词：

NiAl-Cr system; Medium entropy alloys; Eutectic modification; Solidification; MECHANICAL-PROPERTIES; WEAR BEHAVIOR; COMPRESSIVE PROPERTIES; CO-SB; SOLIDIFICATION; HEAT; HF; ORIGIN; NB; TI;

D O I：

10.1007/s42452-019-1338-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Based on the NiAl-Cr pseudo-binary phase diagram, ranging from hypo- to hyper-eutectic areas, alloys with various compositions were produced by arc melting. The microstructures were compared with the theoretical predictions of Tang et al. (Chem Chem Phys 18(29):19773-19786, 2016) and they were proved to be in agreement. The partial substitution of Cr by Mo in three different compositions revealed eutectic and hypo-eutectic microstructures with the eutectic micro-constituent modified from fibrous to lamellar. The importance of T0-A2 and T0-B2 temperatures [the maximum temperatures under which, partitionless solidification of A2 and B2 phases respectively happens (Laughlin and Hono in Physical metallurgy, Elsevier, Amsterdam, 2014)] and their relation to Te (eutectic temperature) proved to be the dominant factor that shifts the microstructures to off equilibrium morphologies in the case of NiAl-Cr alloys.

引用

页数：10