The effects of V addition on the microstructure and compression properties of NiAl-Cr alloys were investigated. V does not change the constituent phases but significantly changes the microstructure morphology. With increasing V content, the microstructures change to be Cr(V) dendrites and NiAl + Cr(V) eutectic. V addition markedly enhances the compression strength due to solid solution strengthening and second phase strengthening. At room-temperature, weak interfacial bonding between Cr(V) dendrites and eutectic as well as the deterioration of eutectic microstructure degrade properties. The room-temperature compression strength initially rise and thereafter decline. The NiAl-28Cr-10V alloy has the highest compression strength of 2350 MPa. At high-temperature, microstructural roughening improves strength, leading to the highest compression strength of 411 MPa in NiAl-28Cr-18V alloy.
GongSKShangYZhangJ, et al.Research progress and application of typical intermetallic compound-based high-temperature structural materials in China. J Met2019; 55: 1067–1076.
2.
YeHQ. Recent developments in high temperature intermetallics research in China. Intermetallics2000; 8: 503–509.
3.
WangHYAnYQLiCY, et al.Research progress of nickel-based high-temperature alloy materials. Mater Lett: Nano New Mater2011; 25: 482–486.
4.
NoebeRDBowmanRRNathalMV. Physical and mechanical properties of the B2 compound NiAl. Int Mater Rev1993; 38: 193–232.
5.
BochenekKBasistaM. Advances in processing of NiAl intermetallic alloys and composites for high temperature aerospace applications. Prog Aerosp Sci2015; 79: 136–146.
6.
MisraAGibalaR. Plasticity in multiphase intermetallics. Intermetallics2000; 8: 1025–1034.
7.
MunroePRGeorgeMBakerI, et al.Microstructure, mechanical properties and wear of Ni-Al-Fe. Mater Sci Eng A2002; 325: 1–8.
8.
ShangZShenJZhangJF, et al.Effect of microstructures on the room temperature fracture toughness of NiAl-32Cr-6Mo hypereutectic alloy directionally solidified at different withdrawal rates. Mater Sci Eng A2014; 611: 306–312.
9.
ShangZShenJZhangJF, et al.Investigations on the microstructure and room temperature fracture toughness of directionally solidified NiAl-Cr(Mo) eutectic alloy. Intermetallics2015; 57: 25–33.
10.
WangLShenJZhangYP, et al.Microstructure evolution and room temperature fracture toughness of as-cast and directionally solidified novel NiAl-Cr(Fe) alloy. Intermetallics2017; 84: 11–19.
11.
JohnsonDROliverBFNoebeRD, et al.NiAl-based polyphase in situ composites in the NiAl-Ta-X (X=Cr, Mo, or V) systems. Intermetallics1995; 3: 493–503.
12.
BeiHGeorgeEP. Microstructures and mechanical properties of a directionally solidified NiAl-Mo eutectic alloy. Acta Mater2005; 53: 69–77.
13.
HuLZhangGHuW, et al.Tensile creep of directionally solidified NiAl-9Mo in situ composites. Acta Mater2013; 61: 7155–7165.
14.
JohnsonDROliverBFNoebeRD, et al.NiAl-based polyphase in situ composites in the NiAl-Ta-X (X=Cr, Mo, or V) systems. Intermetallics1995; 3: 493–503.
15.
WhittenbergerJDRajSVLocciIE,et al.Elevated temperature strength and room temperature toughness of directionally solidified Ni-33Al-33Cr-1Mo. Metall Mater Trans2002; 33: 1385–1397.
16.
ShangZShenJWangL, et al.Effect of microstructure morphology on the high temperature tensile properties and deformation in directionally solidified NiAl-Cr(Mo) eutectic alloy. Mater Charact2015; 109: 152–159.
17.
WangLGaoLShenJ, et al.Eutectic composition design, microstructure, and room temperature mechanical property of NiAl-Cr-Ta three-phase alloy. Metall Mater Trans A2022; 53: 1479–1485.
18.
YangJMJengSMBainK, et al.Microstructure and mechanical behavior of in-situ directional solidified NiAl/Cr(Mo) eutectic composite. Acta Mater1997; 45: 295–308.
19.
JohnsonDRChenXFOliverBF, et al.Processing and mechanical properties of in-situ composites from the NiAl-Cr and the NiAl-(Cr, Mo) eutectic systems. Intermetallics1995; 3: 99–113.
20.
FrommeyerGRablbauerRSchäferHJ. Elastic properties of B2-ordered NiAl and NiAl-X (Cr, Mo, W) alloys. Intermetallics2010; 18: 299–305.
21.
MisraAGibalaRNoebeRD. Optimization oftoughness and strength inmultiphase, intermetallics. Intermetallics2001; 9: 971–978.
22.
MilenkovicSCaramR. Growth morphology of the NiAl-V in situ composites. J Mater Process Technol2003; 143: 629–635.
23.
ClineHEWalterJL. The effect of alloy additions on the rod-plate transition in the eutectic NiAl−Cr. Metall Mater Trans1, 1970; 46: 2907–2917.
24.
MilenkovicSCaramR. Mechanical properties and fracture behavior of directionally solidified NiAl-V eutectic composites. Metall Mater Trans A2015; 46: 557–565.
25.
WangLZhangGJShenJ, et al.A true change of NiAl-Cr(Mo) eutectic lamellar structure during high temperature treatment. J Alloys Compd2018; 732: 124–128.
26.
ZhangJFMaXWRenHP, et al.Influence of growth rate on microstructural length scales in directionally solidified NiAl-Mo hypo-eutectic alloy. J Occup Med2016; 68: 178–184.
27.
ShangZShenJZhangJF, et al.Effect of withdrawal rate on the microstructure of directionally solidified NiAl-Cr(Mo) hypereutectic alloy. Intermetallics2012; 22: 99–105.
28.
ShangZZhangQWShenJ, et al.Effects of V addition on the solidification microstructures and room temperature compression properties of NiAl-Cr(Mo) hypereutectic alloy. Vacuum2020; 179: 109507.
29.
ClineHEWalterJLLifshinE, et al.Structures, faults, and the rod-plate transition in eutectics. Metall Mater Trans B1971; 2: 189–194.
30.
ChenXFJohnsonDRNoebeRD, et al.Deformation and fracture of a directionally solidified NiAl-28Cr-6Mo eutectic alloy. J Mater Res1995; 10: 1159–1170.
31.
MiltonSFLPauloIF. Microstructure and mechanical properties of Ni-Al and Ni-Al-B alloys produced by rapid solidification technique. Intermetallics1996; 4: 85–90.
32.
ShangZZhangQWShenJ, et al.Effects of Nb/Ti additions and heat treatment on the microstructure evolution and hardness of as-cast and directionally solidified NiAl-Cr(Mo) alloy. J Mater Res Technol2021; 10: 905–915.
33.
WangQPLiuSSunMY, et al.Influence of solid solution temperature and aging time on the microstructure and mechanical properties of Inconel 617 high-temperature alloy. Mater Eng2025; 53: 121–130.
