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研究了Ti-Nb-Zr系(Ti-8Nb-13Zr、Ti-13Nb-13Zr、Ti-18Nb-13Zr和Ti-41.1Nb-7.1Zr)合金弹性行为。这些合金首先在氩气氛围内使用电弧熔炼制造出来,然后在MST型的伺服液压机上进行了单轴抗拉测试。在弹性阶段,得出了非线性的应力-应变关系,为分析得到弹性阶段对应的曲线部分,还使用修正Ramberg-Osgood方程来进行讨论。讨论了合金的如下参数:初始弹性模量、切线模量、割线模量、弹性极限应力以及Ramberg-Osgood参数n。结果表明,这些合金具有各不相同的力学特性。此外,文中还用参数n的量化来表示应力-应变关系的非线性程度。
The elastic behavior of Ti-Nb-Zr based alloys (Ti-8Nb-13Zr, Ti-13Nb-13Zr, Ti-18Nb-13Zr and Ti-41.1Nb-7.1Zr) These alloys were first produced using arc melting in an argon atmosphere and then uniaxially tensile tested on an MST servo hydraulic machine. In the elastic phase, a nonlinear stress-strain relationship is obtained. For the sake of analysis, the corresponding curved part of the elastic phase is obtained, and the modified Ramberg-Osgood equation is also used for discussion. The following parameters are discussed: initial elastic modulus, tangent modulus, secant modulus, elastic ultimate stress and Ramberg-Osgood parameter n. The results show that these alloys have different mechanical properties. In addition, the quantification of parameter n is also used to indicate the degree of nonlinearity of the stress-strain relationship.