共搜索到118条信息,每页显示10条信息,共12页。用时:0小时0分0秒406毫秒
method to improve the performance of Al-Li alloys is to add micro-alloying elements, such as Mg, Ag, Mn and Zn. Research on micro-alloying in Al-Li alloys has therefore gotten more and more attractive... little effect on their precipitation [5]. The combined addition of Mg and Ag therefore greatly enhanced the strength of Al-Li alloys. The representative Al-Li alloys containing Mg and Ag micro-alloying......
plastic deformation (SPD) and the other is micro-alloying. Extensive investigations have been carried to explore the action mechanisms of micro-alloying. The micro-alloying elements mainly include rare... are designed to compare the effects of single and double micro-alloying of Ca and Sr on the microstructure and mechanical properties of the Mg-Zn alloy prepared by high-strain-rate rolling (HSRR). 2......
and/or micro-alloying. WANG et al[5] found that RE addition to the ZA84 alloy can modify the morphology, chemical compositions and stability of the precipitates and thus enhance the properties. However, RE... added alloys with slight reduction in ductility. Although the above studies have been carried out to understand the effects of alloying and/or micro-alloying in the ZA84 alloy, the effects of other......
]. Therefore, the refinement of CaMgSn phase is thought as one of the pivotal factors to improve the creep-resistant properties of Mg-3Sn-2Ca magnesium alloy. It is well known that the micro-alloying is one of effective methods to modify and/or refine the second phases in alloys. But up to now, the investigation about the effect of micro-alloying on the as-cast microstructure of Mg-3Sn-2Ca magnesium......
the precipitation process, including modifying the dispersion, morphology and crystal structure of the resulting precipitations[6-8]. Studies on rare-earths as micro-alloying elements showed... properties of 2519 alloy at high temperature[11]. Some recent researches showed that Yb was considered as an effective micro-alloying element in aluminum alloys. It was reported that Yb addition......
to the dispersive β″ (D019) and/or β′ (bco) precipitates in the magnesium matrix. In addition, some researchers also studied new precipitate phase or structure (LPSO) in Mg-Gd alloys via the use of micro-alloying additions of low-cost element Zn[15]. As a micro-alloying element, Gd can also play important role in improving the mechanical properties of conventional Mg-based alloys, however, up to now, few works......
, RADAVICH J F. Long time stability of inconel 718[J]. Journal of Metals, 1970, 5(1): 31-38. [3] HU Z Q, SUN W R, SONG H W. A new method for strengthening wrought superalloys: micro-alloying... alloys grow markedly (Figs.4(c) and (d)). The content of Al is increased from 0.45% of IN718 alloy to 1.24% of the modified 718 alloy, and the other main alloying elements are not changed......
A, ZOU J, YANG Y L, ZENG S M. Effect of Ag micro-alloying on the microstructure and properties of Cu-14Fe in situ composite[J]. Materials Science and Engineering A, 2010, 527(18/19): 4953-4958. [11...]. Transaction of Materials and Heat Treatment, 2010, 31(6): 62-67. [22] LIU K M, LU D P, ZHOU H T, ATRENS A, CHEN Z B, ZOU J, ZENG S M. Influence of Ag micro-alloying on the microstructure and properties......
of Zr56Co22Cu6Al16 glassy alloy remains more or less similar to that of Zr56Co28Al16, in spite of micro alloying an element with the positive heat of mixing. Fig. 1 XRD patterns of as-cast Zr56Co28-xCuxAl16 (x=0, 2... was observed in other works, especially for glassy alloys with immiscible element pairs [21]. It is expected that the Cu micro-alloying with a large positive heat of mixing between Cu and Co atoms leads......
-hardenable, there is a great potential to improve the strength by various heat treatments and micro-alloying. It is generally accepted that, for Mg-Zn alloys containing 4%-9% Zn and aged isothermally...] BUHA J. The effect of micro-alloying addition of Cr on age hardening of an Mg-Zn alloy[J]. Materials Science and Engineering A, 2008, 492(1-2): 293-299. [11] PING D H, HONO K, NIE Jian-feng. Atom probe......