Controlling reversible martensitic transformation in titanium alloys with high strength and low elastic modulus

Controlling reversible martensitic transformation in titanium alloys with high strength and low elastic modulus
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控制高强度低弹性模量钛合金中的可逆马氏体相变

DOI:
10.1016/j.scriptamat.2012.06.011
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发表时间:
2012-09
期刊:
影响因子:
6
通讯作者:
Yang, R.
Yang, R.
中科院分区:
材料科学1区
文献类型:
--
作者:
Hao, Y. L.;Li, S. J.;Prima, F.;Yang, R.

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本文报道了具有高β转变温度和低马氏体起始温度的高强度低弹性模量β型钛合金。该策略是基于Zr和Sn添加到Ti-Nb基合金。Ti-24 Nb-4 Zr-8 Sn合金中的α″马氏体在相变应变和四方性方面比其他合金更接近β相,使得在应变玻璃化转变形成纳米等轴α″马氏体之前,均匀形核的可逆机制被触发。
This paper reports on β-type titanium alloys with high β transus temperature and low martensite start temperature that display high strength and low elastic modulus. The strategy is based on Zr and Sn additions to Ti–Nb-based alloys. The α″ martensite in Ti–24Nb–4Zr–8Sn alloy is structurally much closer to the β phase than other alloys in terms of transformation strain and tetragonality, allowing homogeneously nucleated reversible mechanisms to be triggered before the formation of nanoscaled equiaxed α″ martensite by strain glass transition.
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