公开(公告)号：US20150083285A1

公开(公告)日：2015-03-26

申请号：US14390833

申请日：2013-05-28

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Hidetoshi Somekawa ,  Yoshiaki Osawa ,  Toshiji Mukai ,  Alok Singh ,  Kota Washio ,  Akira Kato

IPC: C22C23/00 ,  C22C23/06 ,  C22F1/06

CPC classification number: C22C23/00 ,  C22C1/02 ,  C22C23/06 ,  C22F1/00 ,  C22F1/06

Abstract: A magnesium alloy of the present invention has the chemical composition that contains 0.02 mol % or more and less than 0.1 mol % of at least one element selected from yttrium, scandium, and lanthanoid rare earth elements, and magnesium and unavoidable impurities accounting for the remainder. A magnesium alloy member of the present invention is produced by hot plastic working of the magnesium alloy in a temperature range of 200° C. to 550° C., followed by an isothermal heat treatment performed in a temperature range of 300° C. to 600° C. The magnesium alloy is preferred for use in applications such as in automobiles, railcars, and aerospace flying objects. The magnesium alloy and the magnesium alloy member can overcome the yielding stress anisotropy problem, and are less vulnerable to the rising price of rare earth elements.

Abstract translation: 本发明的镁合金的化学成分含有选自钇，钪和镧系稀土元素中的至少一种以上的元素的0.02摩尔％以上且小于0.1摩尔％，剩余的镁和不可避免的杂质 。 本发明的镁合金构件通过在200℃〜550℃的温度范围内对镁合金进行热塑性加工而制成，然后在300℃〜300℃的温度范围内进行等温热处理， 600℃。镁合金优选用于诸如汽车，轨道车辆和航空航天飞行物体的应用中。 镁合金和镁合金构件可以克服屈服应力各向异性问题，并且不太容易受到稀土元素价格上涨的影响。