Question

材料成型急控制工程专业英语翻译

L Journal of Alloys and Compounds 320 (2001) 296–301
www.elsevier.com/ locate / jallcom
Selection of promising quaternary candidates from Mg–Mn–(Sc, Gd, Y,
q Zr) for development of creep-resistant magnesium alloys
J. Gro¨bner, R. Schmid-Fetzer*
Technical University of Clausthal, Institute of Metallurgy, Robert-Koch-Str. 42, D-38678 Clausthal-Zellerfeld, Germany
Abstract
Recently developed Mg–Mn–Sc alloys show a considerable increase of creep resistance at elevated temperature. The endeavor to
further improve the properties and to reduce cost of high-price Sc metal initiated a search for additional alloying elements. Gd, Y and Zr
were considered for this purpose. The aim is to achieve a large quantity of suitable precipitations to improve mechanical properties using
a minimum of expensive alloy element addition. The huge amount of possibilities of combining the elements Mg–Mn–(Sc, Gd,Y, Zr) and
the time and cost effort of technological experiments require a preselecting of systems and alloy compositions. Thermodynamic phase
diagram and phase amount calculations were performed to give hints for selecting promising candidates. A priority list of three quaternary
systems is established: Mg–Mn–Gd–Sc, Mg–Mn–Sc–Y and Mg–Mn–Y–Zr, based on the classification of individual alloys. Most
promising is MgMn1Gd5Sc0.8 (wt.%), but the alloys MgMn1Gd5Sc0.3 and MgMn1Y5Sc0.8 are also promising. The entire quaternary
Mg–Mn–Y–Zr system is disqualified because of phase diagram features that are detrimental for the required microstructural engineering.
The focused alloy development following this approach avoids a waste of time and effort. 2001 Elsevier Science B.V. All rights
reserved.
Keywords: Phase diagrams; Alloy development; Thermodynamic calculation; Magnesium; Manganese; Scandium
1. Introduction resistance than best commercial WE43 alloy at 3508C and
30 MPa [1].
Recently developed Mg–Mn–Sc alloys show considera- The endeavor to further improve the properties and to
bly increasing creep resistance at elevated temperature [1]. reduce cost of high-price Sc metal initiated a search for
Initially, investigations started with binary Mg–Sc alloys. additional alloying elements. Gd,Y and Zr were considered
Scandium was chosen for hardening by ageing because of for this purpose. The aim is to achieve a large quantity of
its large solubility in Mg and the retrograde solubility at suitable precipitations to improve mechanical properties
lower temperatures. In fact, the Mg–Sc phase diagram [2] using a minimum of expensive alloy element addition.
shows a peritectic, which is a rare exception among the Gadolinium and yttrium were considered since they form
binary Mg systems.

Answer 1

合金和化合物 320(2001)296-301 的 L 日记
www.elsevier.com/ 位于 / jallcom来自毫克的有希望四个一组的候选人的选择-Mn-(Sc 、 Gd ， Y,q Zr) 为爬的发展-反抗的镁成合金J. Gro ¨ bner, R. Schmid-Fetzer*Clausthal 的技术上大学，冶金的学会, 罗勃特-科赫-Str。 42, D-38678 Clausthal-Zellerfeld, 德国
摘要最近发展毫克-Mn-Sc 的合金在提高的温度出示爬抵抗的相当多增加。努力到更进一步改善财产而且降低被开始对另外的元素成合金的搜寻的高价格 Sc 金属的费用。 Gd 、 Y 和 Zr为这一个目的被考虑。 目标将达成大量的适当坠落改善使用的机械的财产至少贵合金元素附加。 联合元素毫的极大量可能性-Mn-(Sc 、 Gd 、 Y, Zr)和时间和科技实验的费用努力需要系统的预先选定和合金作文。 热力学的状态图表和状态数量计算被运行给选择有希望的候选人的暗示。 一本三个四个一组的优先目录系统被建立: 毫克-Mn-Gd-Sc,毫克-Mn-Sc-Y 和毫克-Mn-Y-以个别合金的分类为基础的 Zr。 大部分允诺是 MgMn1 Gd5 Sc0 。8(wt。%), 但是合金 MgMn1 Gd5 Sc0.3 和 MgMn1Y5 Sc0.8 也是有希望的。 整个的四个一组毫克-Mn-Y-Zr 的系统被丧失资格因为状态，图表扮演重要角色，那对必需的 microstructural 工程学是有害的。
焦点所在的合金发展在这方法之后避免时间和努力的一个废物。 ??2001 Elsevier 科学 B.V. 所有的权利
保留。
牛鼻子字: 状态图表; 合金发展; 热力学的计算; 镁;锰; 钪1. 介绍抵抗超过最好商业广告我们 43 在 3508C 的合金和30 MPa[1].最近发展了毫克-Mn-Sc 的合金表演 considera- 努力更进一步改善财产和到在提高的温度 [1] 的 bly 逐渐增加的爬抵抗. 降低被开始的搜寻的高价格 Sc 金属的费用最初，调查从二进位的毫克-Sc 的合金开始了。 另外的元素成合金。 Gd 、 Y 和 Zr 被考虑钪为藉着老化变硬被选择因为为这一个目的。 目标将达成一大量在毫克的它的大可溶性和那在适当的坠落后退的可溶性改善机械的财产，降低温度。 事实上, 毫克-Sc 的状态使用至少贵合金元素附加的图表 [2]。 表示 peritectic, 因为他们形成，这是在钆和钇之中的稀有例外被考虑二进位的毫克系统。
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