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Acta Metall Sin  1982, Vol. 18 Issue (1): 64-131    DOI:
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THE EFFECT OF Zr ON THE GRAIN GROWTH BEHAVIOUR AND PROPERTIES OF Fe-Ni-Co-Cu TYPE ALLOYS
Ma Jusheng (Tsinghua University; Beijing)
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Ma Jusheng (Tsinghua University; Beijing). THE EFFECT OF Zr ON THE GRAIN GROWTH BEHAVIOUR AND PROPERTIES OF Fe-Ni-Co-Cu TYPE ALLOYS. Acta Metall Sin, 1982, 18(1): 64-131.

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Abstract  In order to control the quality induced by the grain growth during high temperature annealing of Fe-Ni-Co-Cu type alloys, Zr modification can effectively control the grain size to ASTM grade 5 to 6 during annealing at 1050℃.The form of existence of Zr in the alloys is investigated to search for the mechanism of grain growth retarded by Zr.The effect of the structure and size of particles formed by Zr on retarding the grain boundary mobility is analyzed and the factors influencing the effect of Zr retarding grain growth are discussed.It is shown that the addition of Zr in these alloys has improved the properties concerned with grain refinement, such as the characteristics of the grain boundary penetration by brazing alloys, workability, chemical stability, anti-SCC ability etc., and had little effect on its thermal expansion, mechanical properties and weldability by of TIG welding. These alloys modified by proper amount of Zr showed good performance during application to instruments and apparatus.
Received:  18 January 1982     

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https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1982/V18/I1/64

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