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一、前言 侧钛锆合金在难熔金属中以它的强度高,良好的导电热性,低的膨胀系数,高的再结晶温度,同时又比较容易加工而著名。尤其是钛锆碳含量较低的TZM合金在钼合金中更是佼佼者。 根据美国标准TZM合金的成份是Ti0.4～0.55％,Zr0.06～0.12％。C0.01～0.04％,余Mo,合金元素总量不超过1％,就是这些少量元素使钼的机械性能不论是室温还是高温都大为提高,再结晶温度比纯钼高300℃左右,与W相比,W的强度虽然要高一些,但由于W的密度(19.3g/cm~3)是TZM
I. Preface Titanium-zirconium alloy is famous among refractory metals for its high strength, good electrical conductivity, low thermal expansion coefficient, high recrystallization temperature and relatively easy processing. In particular, titanium and zirconium carbon content is lower TZM alloy in molybdenum alloy is more outstanding. According to the American standard TZM alloy composition is Ti0.4 ~ 0.55%, Zr0.06 ~ 0.12%. C0.01 ~ 0.04%, Mo, the total amount of alloying elements does not exceed 1%, is the small amount of these elements so that the mechanical properties of molybdenum are greatly increased at room temperature or high temperature, recrystallization temperature higher than pure molybdenum about 300 ℃, and W compared to the strength of W although higher, but the density of W (19.3g / cm ~ 3) is TZM