Iron-based superelastic alloys with near-constant critical stress temperature dependence

doi:10.1126/science.abc1590

GSTDTAP > 气候变化

DOI	10.1126/science.abc1590
	Iron-based superelastic alloys with near-constant critical stress temperature dependence
	Ji Xia; Yuki Noguchi; Xiao Xu; Takumi Odaira; Yuta Kimura; Makoto Nagasako; Toshihiro Omori; Ryosuke Kainuma
	2020-08-14
发表期刊	Science
出版年	2020
英文摘要	Shape memory alloys are superelastic, which means that they can recover their original shape after a large amount of strain. However, in most alloys, this behavior tends to only work well for a small range of temperatures. Xia et al. identified an iron-manganese-aluminum-chromium-nickel alloy for which superelasticity is virtually temperature independent (see the Perspective by La Roca and Sade). This distinctive property is attractive for a variety of applications in which large temperature variations are normal, such as in space exploration. Science , this issue p. [855][1]; see also p. [773][2] Shape memory alloys recover their original shape after deformation, making them useful for a variety of specialized applications. Superelastic behavior begins at the critical stress, which tends to increase with increasing temperature for metal shape memory alloys. Temperature dependence is a common feature that often restricts the use of metal shape memory alloys in applications. We discovered an iron-based superelastic alloy system in which the critical stress can be optimized. Our Fe-Mn-Al-Cr-Ni alloys have a controllable temperature dependence that goes from positive to negative, depending on the chromium content. This phenomenon includes a temperature-invariant stress dependence. This behavior is highly desirable for a range of outer space–based and other applications that involve large temperature fluctuations. [1]: /lookup/doi/10.1126/science.abc1590 [2]: /lookup/doi/10.1126/science.abc8244
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/288095
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Ji Xia,Yuki Noguchi,Xiao Xu,et al. Iron-based superelastic alloys with near-constant critical stress temperature dependence[J]. Science,2020.
APA	Ji Xia.,Yuki Noguchi.,Xiao Xu.,Takumi Odaira.,Yuta Kimura.,...&Ryosuke Kainuma.(2020).Iron-based superelastic alloys with near-constant critical stress temperature dependence.Science.
MLA	Ji Xia,et al."Iron-based superelastic alloys with near-constant critical stress temperature dependence".Science (2020).