1) secondary dendrite
二次枝晶
1.
Study on modeling of solute concentration distribution in secondary dendrite during solidification of molten steel
钢凝固过程中二次枝晶间溶质分布的模型研究
2.
The effect of nitrogen on the secondary dendrite of primary austenite of Fe-C-Si and Fe-C-Si-Mn grey cast irons was studied through unidirectional solidification.
采用单向凝固方法研究了氮对Ｆｅ－Ｃ－Ｓｉ和Ｆｅ－Ｃ－Ｓｉ－Ｍｎ灰铸铁初生奥氏体二次枝晶组织的影响。
3.
The results show that under the condition of industrial casting furnace,with the increase of withdrawal rate,the element segregation decrease,the primary dendrite and secondary dendrite arm spacing reduce,the size of the as-cast γ′ precipitates shorten.
研究结果表明：在工业生产炉条件下,随抽拉速率的增加,合金元素偏析减小,树枝晶一次及二次枝晶臂距减小,铸态γ′相尺寸逐渐变小。
2) secondary dendrite arm spacing
二次枝晶臂间距
1.
The quantity of primary phase α increases and the eutectoid (α+η) decreases with the increase of aluminum contents in the alloy, while the secondary dendrite arm spacing of the alloy has no remarkable change.
随着铝含量的增多,合金中的初生α相增多,共析体减少,合金的二次枝晶臂间距变化不明显;同时合金的耐磨性随铝含量的增多而增大。
2.
It has been found that the secondary dendrite arm spacing of the former is smaller than that of the latter and the decrease trend with increasing titanium content is similar for both kinds of alloys.
研究了不同含钛量(分别为0 07%Ti、0 13%Ti、0 19%Ti)的原位钛合金化A356合金的微观组织和力学性能,并与相应含钛量熔配加钛A356合金进行了对比,发现原位钛合金化A356合金的二次枝晶臂间距小于熔配加钛合金,随着钛含量增加二次枝晶臂减小且趋势相同。
3.
The directional solidification method was used to investigate the secondary dendrite arm spacing of primary austenite of hypoeutectic Fe-C-Si-Mn alloy with various antimony contents.
采用定向凝固方法研究了不同锑含量的亚共晶Ｆｅ－Ｃ－Ｓｉ－Ｍｎ合金初生奥氏体二次枝晶臂间距。
3) secondary dendrite arm spacing
二次枝晶间距
1.
Effect of Chill on Secondary Dendrite Arm Spacing of Aluminum Alloy Casting;
冷铁对铝合金铸件二次枝晶间距的影响
2.
Based on the resin bonded sand casting process,the effects of chill processes on the secondary dendrite arm spacing(SDAS) and densification of Al-Si-Mg alloy were studied.
基于Al-Si-Mg合金的树脂砂铸造过程,研究了冷铁工艺对Al-Si-Mg合金铸件二次枝晶间距(SDAS)及致密度的影响。
3.
The effect of counter-pressure casting parameters on secondary dendrite arm spacing (SDAS)of A357 alloy was studied.
研究了差压铸造不同工艺参数对A357合金二次枝晶间距的影响。
4) SDAS
二次枝晶臂间距
1.
The study of secondary dendritic arm spacing(SDAS) in high carbon steel billets shows that the SDAS decreases with application of M-EMS or increase with secondary cooling intensity,and the SDAS increases with increase of superheat and casting speed.
通过研究高碳钢小方坯连铸参数对铸坯二次枝晶臂间距的影响发现:采用结晶器电磁搅拌、加大二冷比水量,二次枝晶臂间距减小;过热度升高、拉速增大,二次枝晶臂间距增大。
5) second dendrite arm spacing
二次枝晶臂距
1.
Through the analyzing of the simulated results of the solid fraction, solidification time and second dendrite arm spacing, it is found that, in the upper side and the right side of axis box, it is easy to cause the pores and the second dendrite arm spacing is also easily to grow coarser than those in other places.
通过对固相分数、凝固时间和二次枝晶臂距大小分布的分析,可以看出在充型过程和随后的冷却过程,在轴箱的上部和前端靠近直浇道侧容易产生缩松并且二次枝晶臂距较为粗大。
6) dendrite arm space
二次枝晶间距
1.
The effect of characteristic parameters on differential thermal analysis curve, solidification setup temperature and cooling rate on dendrite arm space (λ DAS ) was studied, and IAS-4 Image Analysis System was used for microstructural examination.
本文采用差热分析方法研究DTA曲线特征参数、凝固开始温度和冷却速率对二次枝晶间距λDAS的影响 ,同时使用IAS - 4图像分析系统分析了合金的微观组织 。
2.
The relationships of solidification time ( τ ), temperature gradient ( G ), freezing index (f i ),temperature gradient acceleration ( a GAP ) , dendrite arm space ( λ DAS ), hole ratio ( P ) and ultimate tensile strength ( σ b) of the cylindrical ZL105, ZL101, ZL109 Al Si alloy castings have been studied under the condition of the sand mold casting .
针对ＺＬ１０５，ＺＬ１０１，ＺＬ１０９铝硅合金圆柱体铸件，在砂型铸造条件下，研究了凝固时间τ，温度梯度Ｇ，凝固指数ｆｉ，温度梯度加速度ａＧＡＰ与铸件二次枝晶间距λＤＡＳ，孔洞率Ｐ和极限抗拉强度σｂ之间的关系。
补充资料：输出反馈(见线性二次型次优控制)
输出反馈(见线性二次型次优控制)
output feedback
3h日c卜口fon以以{输出反馈型次优控制。(output王eedbaek)见线性二次
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参考词条