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为解决Fe-Ni-Co-Cu系合金应用中因高温退火晶粒粗大而引起的质量问题,研究了Zr对此类合金再结晶过程中晶粒长大特性的影响。结果表明,Zr可有效地细化合金的晶粒。经1050℃退火后,合金晶粒度为5—6级。本文研究了Zr在合金中存在的形式,以探明Zr抑制高温晶粒长大的原因。分析了添加Zr形成的第二相质点类型、尺寸对抑制晶界推移的作用,并讨论了影响Zr抑制晶粒长大效果的因素。实验结果表明,Zr可使与合金晶粒度有关的性能(如抗焊料渗透性、热加工性、化学稳定性及抗应力腐蚀开裂性能等)得到改善,而对合金的热膨胀性能、力学性能、氩弧焊可焊性等均无大的影响。合金的应用试验表明,添加适量Zr后,使用性能良好。
In order to solve the quality problem caused by the high temperature annealing grain size in Fe-Ni-Co-Cu alloy, the influence of Zr on grain growth characteristics during recrystallization was studied. The results show that Zr can effectively refine the alloy grains. After annealing at 1050 ℃, alloy grain size of 5-6 grade. In this paper, the existence of Zr in the alloy was studied to find out the reason why Zr inhibited the growth of high temperature grains. The type and size of the second phase formed by adding Zr are analyzed. The effect of Zr on grain growth inhibition is also discussed. The experimental results show that Zr can improve the grain size-related properties (such as solder penetration resistance, hot workability, chemical stability and stress corrosion cracking resistance) of the alloy. However, the thermal expansion properties, mechanical properties, TIG weldability and so no major impact. Alloy application tests show that, after adding an appropriate amount of Zr, the use of good performance.