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本发明是关于用含1.2—1.7Sn 0.07—0.24Fe 0.05—0.15Cr 0—0.08Ni 0.09—0.09—0.16O(重量百分数)余量为锆及常见杂质的锆合金——通称为锆锡合金或锆—2、锆—4合金——生产管材和其他产品的制作方法。在通常生产锆合金管例如用于反应堆的包套管时,材料被熔炼和铸造后,有一个从铸锭到成品的塑性加工阶段。加工通常由α区的锻造开始,接着进行所谓的β淬火——即加热到β区然后水淬到室温。随后在α区挤压,挤压后进行一系列的三辊轧制、拉拨或类似的冷加工。其间,通常在α相区进行中间退火。所谓α-相区就是具有稳定的密排六方晶格的低温区,而β-相区意味着具有稳定的体心立方晶格的高温区。在纯锆中,a和β区之间的相界是在862℃,而在所有的合金中,在这个温度附近存在着一个a+β的
The present invention relates to the use of a zirconium alloy containing zirconium and common impurities in the balance of 1.2-1.7Sn 0.07-0.24Fe 0.05-0.15Cr 0-0.08N 0.09-0.09-0.16O (by weight) - commonly known as Zircaloy or Zirconium-2, Zirconium-4 alloys - Methods of making pipes and other products. In the usual production of zirconium alloy tubes, such as those used in reactors, after the material is melted and cast there is a plastic working phase from ingot to finished product. The processing is usually started by forging in the a zone, followed by so-called β quenching - heating to zone β and then water quenching to room temperature. Followed by extrusion in zone a, followed by a series of three-roll, draw-off or similar cold working. In the meantime, intermediate annealing is usually performed in the α-phase region. The so-called a-phase region is a stable low density region of a hexagonal close-packed lattice, and the β-phase region means a high temperature region having a stable body-centered cubic lattice. In pure zirconium, the phase boundary between the a and β regions is at 862 ° C, whereas in all the alloys there is a + β near this temperature