High Performance ZrNbAl Alloy with Low Thermal Expansion Coefficient
Yun-Kai Zhou1,2** , Xing Zhang2 , Shu-Guang Liu2 , Ming-Zhen Ma2 , Ri-Ping Liu2**
1 School of Mechanical Engineering, Yanshan University, Qinhuangdao 0660042 State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004
Abstract ：Thermal expansion is a common phenomenon in both metals and alloys, which is important for metallic material applications in modern industry, especially in nuclear and aerospace industries. A lower thermal expansion coefficient may cause lower thermal stress and higher accuracy. A new Zr-based alloy is developed and presented. The XRD diffraction results demonstrate that only a close-packed hexagonal phase ($\alpha$ or $\alpha'$ phase) exists in the microstructure. The thermal expansion and mechanical properties are studied. According to the experimental results, the new Zr-based alloy presents a low thermal expansion coefficient and good mechanical properties. Also, its thermal expansion coefficient is stable through solution treatment.
收稿日期: 2018-04-08
出版日期: 2018-07-15
:
65.40.De
(Thermal expansion; thermomechanical effects)
64.70.kd
(Metals and alloys)
62.20.M-
(Structural failure of materials)
81.40.Cd
(Solid solution hardening, precipitation hardening, and dispersion hardening; aging)
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