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grain growth behavior
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  晶粒长大行为
     Grain growth behavior and its effect on the mechanical properties for 00Ni18Mo4Ti alloy, a high strength cobaltfree maraging steel, have been studied with Leica Metal Work software on the Leica Microsysteme optical microscope.
     在光学显微镜下,通过LeicaMetalWork软件研究了一种高强度无钴马氏体时效钢(00Ni18Mo4Ti)的再结晶晶粒长大行为及其对力学性能的影响。
短句来源
     Grain Growth Behavior in Sintered Nd-Fe-B Magnets
     Nd-Fe-B磁体烧结过程晶粒长大行为的研究
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     Grain Growth Behavior of FGH96 Powder Metallurgy Superalloys Billet Disc During Heat Treatment
     FGH96合金锻造盘坯热处理过程中的晶粒长大行为
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     Sintering densification and grain growth behavior of nanograined W-25Cu composite powder produced by mechanical alloying are studied, the effect of a new grain growth inhibitor on W grain growth as well as its affecting mechanism is investigated.
     研究了机械合金化工艺制备纳米晶W-25Cu复合粉末的烧结致密化和晶粒长大行为,并考察了一种新型晶粒长大抑制剂对抑制W晶粒长大的作用,探讨了其作用机理。
短句来源
     The grain growth behavior,the effect of sintering temperature,sintering time,particle size and particle size distribution on the grain growth behavior,and the grain growth mechanism in sintered Nd-Fe-B magnets were investigated.
     定量描述了Nd-Fe-B磁体烧结过程晶粒长大行为,分析了烧结温度、烧结时间、合金粉末粒度及其分布对烧结过程晶粒长大的影响,讨论了烧结过程晶粒长大机制。
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  晶粒长大规律
     Grain Growth Behavior of 5Cr21Mn9Ni4N Steel Micro-Alloyed by Rare Earth
     稀土微合金化5Cr21Mn9Ni4N钢晶粒长大规律
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     AUSTENITE GRAIN GROWTH BEHAVIOR OF STEEL 33Mn2V DESIGNED FOR OIL-WELL TUBES
     新型油井管钢33Mn2V的奥氏体晶粒长大规律
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     Study on Grain Growth Behavior in Fitting-manufacture Process of X70 Pipeline Steel
     X70管线钢在管件制造过程中晶粒长大规律研究
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     Grain growth behavior of 5Cr21Mn9Ni4NRE steel was experimentally studied at various solid solution treatment temperatures and holding for different times.
     对5Cr21Mn9Ni4NRE气阀钢在不同固溶温度和不同保温时间下的奥氏体晶粒长大规律进行了系统研究。
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     Grain growth behavior and its kinetics during heat-treating process of FGH96 superalloy have been investigated.
     对FGH96合金在热处理过程中晶粒长大规律进行了系统的研究。
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  “grain growth behavior”译为未确定词的双语例句
     The experimental results showed a normal grain growth behavior at the solution temperature range of 1073~1473K for the experimental steel.
     结果表明,在1073~1473K固溶温度范围内,再结晶晶粒表现出正常长大行为;
短句来源
     The Effect of Al, Ti, V and Nb on the Grain Growth Behavior of Austenite in Medium Carbon Steels
     铝、钛、钒和铌对中碳钢奥氏体晶粒度的影响
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     It is scientifically significant to study the thermal stability and grain growth behavior of nanocrystalline materials.
     研究纳米晶材料的热稳定性和纳米晶粒长大特征对保持纳米尺度显微组织及其优异性能具有十分重要的科学意义和实用价值。
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     The grain growth behavior of melt in-situ reaction spray deposited 7075+TiC (2.91%, volumic fraction) alloy were studied, and the effect of in-situ TiC particles on the microstructure of spray-formed 7075 alloy was investigated.
     利用熔铸-原位反应喷射成形技术制备7075+TiC(2.91%,体积分数)铝合金半固态坯料,将合金加热到固液两相区不同温度,保温不同时间,淬火固定其半固态组织.
短句来源
     The austenitic grain growth behavior of 34CrMoV steel in work hardening,dynamic recovery and dynamic recrystallization,all occurring during the hot deformation,as well as the influence of deformation rate and holding time after the deformation on the austenitic grain growth,were investigated by means of thermal physical simulation experiments using a Gleeble-1500 thermal simulator.
     通过G leeb le-1500热模拟实验机的物理模拟实验,研究了34CrMoV钢发生加工硬化、动态回复或动态再结晶时,奥氏体晶粒尺寸的变化规律,及变形量和高温停留时间对其奥氏体晶粒尺寸的影响.
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  grain growth behavior
It is shown that decrease in the heating rate results in accelerated grain growth behavior compared with the prediction by quasi-isothermal based kinetics.
      
Microstructure and grain growth behavior of an aluminum alloy metal matrix composite processed by disintegrated melt deposition
      
Grain-boundary pinning by the stable oxide particles plays an important role in determining the grain growth behavior at high temperatures.
      
In addition, the isothermal grain growth behavior in this alloy was investigated in the temperature range of 150 °C to 720 °C, and the resulting grain growth activation energy was analyzed to rationalize the underlying grain growth mechanisms.
      
Grain growth behavior of tungsten heavy alloys based on the master sintering curve concept
      
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The effect of Ba, Ca and Mg on grain growth behavior of the materia 1 is studied by doping molybdenum with these trace alkaline earth metals and processing with conventional techniques. The result shows that doping elemen ts obviously arrest the normal grain growth under certain temperature, result ing in the average grain size of the material much smaller than that of pure mo lybdenum. However, these doping elements accelerate the abnormal gram growth at temperature over 2050℃,...

The effect of Ba, Ca and Mg on grain growth behavior of the materia 1 is studied by doping molybdenum with these trace alkaline earth metals and processing with conventional techniques. The result shows that doping elemen ts obviously arrest the normal grain growth under certain temperature, result ing in the average grain size of the material much smaller than that of pure mo lybdenum. However, these doping elements accelerate the abnormal gram growth at temperature over 2050℃, resulting the"ilslandlike grains" and some grains coarsening up to 50mm.

用掺杂法将微量的碱土金属元素Ba、Ca、Mg掺入钼中,按通常的工艺制度加工,研究了Ba、Ca、Mg对其晶粒长大行为的影响。结果表明:在一定的温度下,掺杂元素有明显的抑制晶粒正常长大的作用,其平均晶粒度远较纯钼的小,温度上升到2050℃以后,掺杂元素又反过来促进晶粒的异常长大,并有“岛状晶粒”出现,个别晶粒粗化,最大晶粒达50mm。

Tungsten heavy alloy is regarded as a very important kinetic penetrator in military use, due to its combined physical and mechanical properties, such as high density, high strength and hardness, good ductility. Nano material is a new material with wide application in the 21th century. Using nano powder as initial powder, the tungsten grain size can be greatly decreased, while the tensile strength, ductility and hardness can be greatly increased. Thus, it is an important orientation of preparation of a new...

Tungsten heavy alloy is regarded as a very important kinetic penetrator in military use, due to its combined physical and mechanical properties, such as high density, high strength and hardness, good ductility. Nano material is a new material with wide application in the 21th century. Using nano powder as initial powder, the tungsten grain size can be greatly decreased, while the tensile strength, ductility and hardness can be greatly increased. Thus, it is an important orientation of preparation of a new tungsten heavy alloy with super high strength and ductility. In this paper, the nano powder was prepared by using MA, the sintering densification and grain growth behavior under constant pressure during sintering in hydrogen atmosphere were studied. The results show that, using nano powder, the densification is greatly enhanced. The densification temperature can decrease by 100~200 ℃. After solid state sintering at 1 400 ℃, the densified alloy with very fine grain size is obtained. At the same time, the key problems of the nano powder during liquid phase sintering were pointed out in this paper, that is, double speed of tungsten grain re arrangement and grain coalescence result in rapid grain growth. After holding for a short time during liquid phase sintering, the tungsten grain size is increased near that of traditional liquid phase sintering.

高密度合金由于具有密度和强度高、延性好等一系列优异的性能 ,在军工上被用作动能穿甲弹材料 .纳米材料被认为是 2 1世纪应用前景非常广阔的新型材料 ,采用纳米粉末可望大大细化钨合金晶粒 ,显著提高合金的强度、延性和硬度等力学性能 ,因而是制备新型高强韧高密度钨合金的很重要的研究方向 .作者采用机械合金化 (MA)工艺制备了纳米钨合金复合粉末 ,研究了纳米钨合金粉末在常压氢气气氛中的烧结致密化和在烧结过程中的W晶粒长大行为 .同时 ,指出了在液相烧结时存在的问题 ,即W晶粒加速重排、产生晶粒聚集与合并 ,迅速发生W晶粒长大 ,在较短时间内液相烧结时 ,W晶粒尺寸又长大到接近传统高密度合金水平 .研究结果表明 ,MA纳米粉末促进了致密化 ,使致密化温度降低 10 0~ 2 0 0℃ ;在一般固相烧结温度时可以得到晶粒粒径为 3~ 5 μm的细晶高强度合金

Tungsten heavy alloy is regarded as a very important kinetic penetrator in army use, due to its com-bined physical and mechanical properties, such as, high density, high strength and hardness, good duc- tility. Nano-material is a new kind of materials with wide applications in 21th century. With using nano-powder as initial powder, the tungsten grain size can be greatly decreased, while the tensile strength,ductility and hardness be greatly increased. Thus, it is an important orientation of preparation of anew...

Tungsten heavy alloy is regarded as a very important kinetic penetrator in army use, due to its com-bined physical and mechanical properties, such as, high density, high strength and hardness, good duc- tility. Nano-material is a new kind of materials with wide applications in 21th century. With using nano-powder as initial powder, the tungsten grain size can be greatly decreased, while the tensile strength,ductility and hardness be greatly increased. Thus, it is an important orientation of preparation of anew kind tungsten heavy alloy with super high strength and ductility. In this paper, the nano-powder wasprepared by using MA, the sintering densification and grain growth behavior at constant pressure duringsintering in hydrogen atmophere were studied. The rmsults show, with using nano-powder, the densifica-tion is greatly enhanced, the densification temperature decreases about 100~200℃. After solid statesintering at 1 400℃, the densified alloy with very fine grain size is obtained. At the same time, the keyproblems of the nano-powders during liquid phase sintering were pointed out, that is, double speed oftungsten grain re-arrangement and grain coalescence result in rapid grain growth. After holding short timeduring liquid phase sintering, the tumgsten grain sizes are increased near to that of traditional liquid phasesintering.

高比重合金由于具有密度和强度高、延性好等一系列优异的性能,在军工上被用作动能穿甲弹材料.纳米材料被认为是21世纪应用前景最为广阔的新型材料.采用纳米粉末可望大大细化钨合金晶粒,显著提高合金的强度、延性和硬度等力学性能,因而是制备新型高强韧、高比重钨合金的一个很重要的研究方向.作者采用机械合金化(MA)工艺制备了纳米晶钨合金复合粉末,研究了纳米晶钨合金粉末在常压氢气气氛中的烧结致密化和在烧结过程中的钨晶粒长大行为.研究结果表明,MA纳米晶粉末促进了致密化,使致密化温度降低约100~200℃.在一般固相烧结温度时可以得到晶粒尺寸为3~5μm的细晶高强度合金.同时,指出了在液相烧结时存在的问题,即钨晶粒加速重排、产生晶粒聚集与合并,迅速发生钨晶粒长大,在较短时间内液相烧结时,钨晶粒尺寸又长大到接近传统高比重合金水平.

 
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