公开(公告)号：US4083220A

公开(公告)日：1978-04-11

申请号：US678933

申请日：1976-04-21

申请人： Masaru Kobayashi ,  Atsuya Kamada ,  Takao Terabayashi ,  Hiroshi Asao

发明人： Masaru Kobayashi ,  Atsuya Kamada ,  Takao Terabayashi ,  Hiroshi Asao

IPC分类号： C21D7/02 ,  C21D8/00 ,  C22F1/00 ,  B21D31/00

CPC分类号： C21D7/02 ,  C21D8/005 ,  C22F1/00 ,  Y10S72/70

摘要： Improvements in a plastic working process for face-centered cubic metals, and titanium and zirconium having close-packed-hexagonal lattice, which process utilizes a phenomenon that the ductility of these metals is increased at sub-zero temperatures, i.e., temperatures below 0.degree. C. This process includes the steps of (i) imparting plastic flow including at least a uniaxial tensile stress field a metal at a temperature below zero, (ii) subjecting the metal to plastic flow to an extent that the strain of the metal is within the limit of uniform elongation of the metal, and then to plastic flow including at least a uniaxial tensile stress field continuously thereafter, or (iii) using frost as a lubricant for plastic working at temperatures below 0.degree. C according to either one of the foregoing steps.

摘要翻译： 对于面心立方金属的塑性加工工艺以及具有紧密堆积六边形晶格的钛和锆的改进，该方法利用了这样的现象：这些金属的延展性在零度以下，即低于0℃ C.该方法包括以下步骤：（i）在低于零的温度下赋予包括至少单轴拉伸应力场金属的塑性流动，（ii）使金属塑性流动达到金属应变范围内的塑性流动 金属的均匀伸长极限，然后至少包括至少单轴拉伸应力场的塑性流动，或者（iii）根据上述任一项，使用霜作为在0℃以下的温度下进行塑性加工的润滑剂 脚步。