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1)  mean value treatment
均值化处理
2)  homogenizing treatment
均化处理
1.
After the homogenizing treatment of the cast Mg-Li-Zn-Zr Alloy, θ' (MgLi2Zn) turned into 6 (MgLiZn), which is more steady.
对铸态Mg-Li-Zn-Zr合金均化处理后,合金的θ’相转变为更为稳定的θ相(MgLiZn),并且均化处理可以明显提高铸态Mg-7。
2.
Research works of this thesis aims at the light magnesium lithium alloys and mainly focuses on the effects of the misch metal and some thermal treatments such as the homogenizing treatment 、 the hydrogenating treatment etc.
本论文以轻质镁锂合金材料为研究对象,以均化处理、氢化处理等热处理手段和混合稀土对Mg-Li-Zn-Zr系镁合金的显微组织和机械性能影响为主要研究内容,以具有代表性的Mg-7。
3)  uniform heat treatment
均匀化处理
1.
The microstructure and tensile properties of magnesium alloy ZK60 after uniform heat treatment and extrusion + aging treatment were investigated and were compared with those of the alloy as-cast.
结果表明,铸态ZK60合金经450℃×14h均匀化处理后,得到几乎单相固溶体,伸长率较铸态提高80。
2.
In this paper,the experiments of uniform heat treatment at different temperature and time were carried out on the ingots of Mg-Y-Nd-Zr alloy.
本文对 Mg-Y-Nd-Zr 合金铸锭在不同温度和时间下进行均匀化处理,采用金相显微镜、X-Ray 衍射和扫描电镜及能谱分析仪对合金不同状态下的微观组织和成分进行观察分析。
4)  homogenizing [英][həu'mɔdʒənaiz]  [美][ho'mɑdʒə,naɪz]
均匀化处理
1.
Effects of 5083 aluminium alloy ingot homogenizing on properties and structures of ingot and plates;
5083铝合金铸锭均匀化处理对铸锭和板材组织与性能的影响
2.
The results show that comparing with as-cast, the alloy after homogenizing have a high percentage of area reduction,but its tensile strength decreased obviously;when the deformation temperature in 300℃420℃,The percentage of area reduction showed a trend of first increase and then decrease,and has a maximum value in 380℃-400℃,Tensile strength showed a degressive trend of similar lines.
均匀化处理的合金,在应变速率为0。
5)  homogenization treatment
均匀化处理
1.
Effect of homogenization treatment on the hardness and electro-conductivity of as-cast Al-Zn-Mg-Sc alloy
均匀化处理对铝-锌-镁-钪铸态合金硬度和电导率的影响
2.
Effects of Homogenization Treatment on Microstructure and High Temperature Deformation Behavior of As-cast AZ80 Magnesium Alloy
铸态AZ80镁合金均匀化处理及高温塑性研究
3.
The homogenization treatment showed that the LFEC ingot has a better homogenization effect than conventional DC ingot.
利用低频电磁铸造工艺制备了具有细小、均匀等轴晶组织的7050铝合金铸锭,研究了均匀化处理过程中铸锭微观组织及性能的变化。
6)  homogenizing treatment
均匀化处理
1.
Research on homogenizing treatment process for 3004 aluminum alloy ingot
3004铝合金铸锭均匀化处理工艺研究
2.
The constituent of the Φ 201 mm semicontinuous casting ingot of 7050 aluminum alloy and their evolution during homogenizing treatment at 470 ℃ were studied by means of differential scanning calorimeter(DSC), optical microscope(OM), scanning electron microscope with energy dispersive X-ray spectroscopy(SEM-EDS) and X-ray diffraction(XRD) analysis.
采用DSC、金相、扫描电镜及能谱分析、X射线衍射相分析等方法,研究了7050合金Φ200mm半连续铸锭的结晶相及其在470℃均匀化处理过程的变化规律。
3.
Three methods were used to fabricate C_f/Ti-Al composites for application of continuous fiber reinforced titanium aluminide matrix composites in the fields of aeronautics and astronautics: pressure infiltration, pressure infiltration-homogenizing treatment and mechanical alloying-pressure infiltration.
本文以连续纤维增强金属间化合物基复合材料在航空航天领域中的应用为背景,通过压力浸渗一步法、压力浸渗-高温扩散-均匀化处理三步法、机械合金化-压力浸渗二步法三种方法制备了C_f/Ti-Al复合材料,利用扫描电镜、透射电镜、拉伸试验、三点弯曲试验、均匀化处理等多种手段,较为系统地研究了复合材料的组织特征、力学性能及其影响因素。
补充资料:均值不等式

几个重要不等式(一)

一、平均值不等式

设a1,a2,…, an是n个正实数,则,当且仅当a1=a2=…=an时取等号

1.二维平均值不等式的变形

(1)对实数a,b有a2+b2³2ab          (2)对正实数a,b有

(3)对b>0,有,   (4)对ab2>0有,

(5)对实数a,b有a(a-b)³b(a-b)                (6)对a>0,有

(7) 对a>0,有                   (8)对实数a,b有a2³2ab-b2

(9) 对实数a,b及l¹0,有

二、例题选讲

例1.证明柯西不等式

证明:法一、若或命题显然成立,对¹0且¹0,取

代入(9)得有

两边平方得

法二、,即二次式不等式恒成立

则判别式

例2.已知a>0,b>0,c>0,abc=1,试证明:

(1)

(2)

证明:(1)左=[]

=

³

(2)由知

同理:

相加得:左³

例3.求证:

证明:法一、取,有

a1(a1-b)³b(a1-b), a2(a2-b)³b(a2-b),…, an(an-b)³b(an-b)

相加得(a12+ a22+…+ an2)-( a1+ a2+…+ an)b³b[(a1+ a2+…+ an)-nb]³0

所以

法二、由柯西不等式得: (a1+ a2+…+ an)2=((a1×1+ a2×1+…+ an×1)2£(a12+ a22+…+ an2)(12+12+…+12)

=(a12+ a22+…+ an2)n,

所以原不等式成立

例4.已知a1, a2,…,an是正实数,且a1+ a2+…+ an<1,证明:

证明:设1-(a1+ a2+…+ an)=an+1>0,

则原不等式即nn+1a1a2…an+1£(1-a1)(1-a2)…(1-an)

1-a1=a2+a3+…+an+1³n

1-a2=a1+a3+…+an+1³n

…………………………………………

1-an+1=a1+a1+…+an³n

相乘得(1-a1)(1-a2)…(1-an)³nn+1

例5.对于正整数n,求证:

证明:法一、

>

法二、左=

=

例6.已知a1,a2,a3,…,an为正数,且,求证:

(1)

(2)

证明:(1)

相乘左边³=(n2+1)n

证明(2)

左边= -n+2(

= -n+2×[(2-a1)+(2-a2)+…+(2-an)](

³ -n+2×n

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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