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首页> 外文期刊>International Materials Reviews >Effect of oxygen and hydrogen on mechanical properties of commercial purity titanium
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Effect of oxygen and hydrogen on mechanical properties of commercial purity titanium

机译：氧气和氢气对工业纯钛机械性能的影响

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Commercial purity (CP) titanium is used primarily in applications requiring exceptional corrosion resistance. The CP titanium alloys contain small amounts of oxygen. The mechanical properties of titanium, such as tensile and fatigue strengths, can be enhanced with oxygen additions, but care must be taken not to compromise toughness and ductility. Hydrogen, at concentrations below the commercially accepted limit, can also be detrimental to some of the mechanical properties of CP titanium, particularly under multiaxial stress and at both high and low strain rates. Hydrogen decreases ductility and creep resistance without, however, lowering the tensile strength. Although some of these effects result from the formation of a hydride phase, transmission electron microscope evidence indicates that residual interstitial hydrogen lowers the energy for dislocation generation and propagation. These hydrogen effects are more pronounced in oxygen alloyed titanium than in high purity titanium.
机译：商业纯度（CP）钛主要用于需要出色耐腐蚀性的应用中。 CP钛合金包含少量的氧。钛的机械性能（例如拉伸强度和疲劳强度）可以通过添加氧气来增强，但必须注意不要破坏韧性和延展性。氢的浓度低于商业上可接受的极限，也可能损害CP钛的某些机械性能，尤其是在多轴应力下以及高和低应变速率下。氢会降低延展性和抗蠕变性，但不会降低拉伸强度。尽管其中一些影响是由氢化物相的形成引起的，但透射电子显微镜的证据表明，残留的间隙氢降低了位错产生和传播的能量。这些氢效应在氧合金化钛中比在高纯度钛中更为明显。

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