It is considered that the V-N micro-alloy high carbon wire rods obtain the high strength and toughness mainly due to grain refining and precipitation strengthening.

研究认为钒氮微合金化硬线钢主要通过细晶强化和沉淀析出强化，从而提高钢材的强韧件。

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Precipitation uplifts ground water level and weakens shearing strength of soil, thus results in large displacement in side direction.

大气降水抬升了地下水位，并削弱了土体的抗剪强度，从而使得土体的侧向位移迅速增大。

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In addition, discontinuous precipitation often occurs in the later stage during aging, which caused the sharp decrease of many properties including strength and corrosion resistance.

另外，合金时效后期易产生不连续沉淀，导致合金的强度、抗腐蚀性等性能大大降低。

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