1) grain boundary carbide
晶界碳化物
1.
The results show that variations of short-term creep rupture life of the alloy are closely correlative with the grain boundary carbide concentration ( C ) and the grain size ( r ) of γ′ phases.
结果表明 ,热处理后该合金高温短时持久寿命的变化与晶界碳化物浓度C及γ′相颗粒平均半径r的变化密切相关。
2.
The main cause is high Mn content and low Si content in the crankshaft material,and forming grain boundary carbide due to improper cooling after casting,in addition,forming higher internal stress due to casting cooling in the sand box,and causing brittle fracture during unpacking the box.
QT700-2大截面曲轴在浇涛后的拆箱过程中发生断裂现象,经分析主要是由于曲轴含Mn量偏高、含Si量偏低,浇铸后冷却不当形成晶界碳化物;并且铸件在砂箱中冷透,形成较大的内应力,拆箱时造成脆性断裂。
2) grain boundary carbides
晶界碳化物
1.
The effects of grain boundary carbides on 850℃ yield strength was studied.
通过对ＧＨ５８６合金在不同固溶处理温度下的金相组织观察、晶界碳化物萃取复型的透射电镜观察、定量相分析及８５０℃拉伸性能的测试，研究了晶界碳化物对合金高温拉伸性能的影响。
2.
In present paper,the model about the growth of grain boundary carbides and chromium depletion region during ther- mal treatment(TT)for GH3690 alloy is founded.
本文建立了 GH3690合金在特殊时效处理(TT 处理)过程中晶界碳化物的长大及贫铬区演化模型,并首次利用 DICTRA 软件及相应数据库,分析了 TT 处理对晶界附近铬元素扩散和晶界碳化物长大机制的影响。
3) eutectic carbide
共晶碳化物
1.
These structures make the quenching temperature to be rise and the overtemperature structure and the uniformity of eutectic carbide in the steel are the major reasons of quenching crack.
结果表明,由于刨齿轮W18Cr4V钢共晶碳化物不均匀度严重超标,网状碳化物、莱氏体的存在使得淬火加热温度过高,造成组织过热,增加了材料的脆性,降低了刨齿刀的力学性能,导致刨齿刀淬火时产生裂纹。
2.
Results show that, when suitable RE is added into high carbon high speed steel,the austenite and eutectic carbides have been changed.
热处理后,共晶碳化物大部分变成团球状且分布均匀。
3.
After heat treatment, network eutectic carbides of cast Cr12 die steel are changed into nodular and dispersed ones in the matrix.
铸造Cr12模具钢中共晶碳化物呈网状分布于晶界上,且枝晶粗大,经Al-Zn变质处理,共晶组织明显细化,离异共晶数量增多;经热处理后,Cr12模具钢共晶碳化物由网状变为粒状和块状且均匀分布于基体中,同时,硬度有所降低,冲击韧性得到明显提高。
4) Eutectic carbides
共晶碳化物
1.
Study of fractal dimension on the unevenness of eutectic carbides of Cr12 steel;
Cr12钢共晶碳化物不均匀度的分维研究
2.
The results show that, the morphology and distribution of the eutectic carbides are improved and the grain refinement is better with the increase of compound modifier addition within 1.
0%范围内,随着复合变质剂含量的逐渐增加,共晶碳化物的形貌和分布得到了改善,晶粒得到细化,分布趋于均匀,轧辊用高速钢的硬度略有下降,但韧性有很大提高。
3.
The result shows that the morphology and distribution of eutectic carbides in Cr12 steel under new process were improved, spheroidal pearlite and fine grain of alloy carbides were obtained,mechanics properties were enhanced.
试验结果表明,经该工艺处理的Cr12钢,组织中共晶碳化物形态和分布得以明显改善,最终热处理后获得了均匀的细隐晶回火马氏体和弥散分布的细粒状合金碳化物的显微组织,获得了优异的综合力学性能,使热处理后的拉丝模和冷冲模的使用寿命比常规热处理工艺处理的使用寿命提高1～2倍。
5) carbides at grain boundaries
晶间碳化物
6) carbide microcrystallization
碳化物微晶化
补充资料：碳化硅晶须补强碳化硅陶瓷基复合材料
分子式：
CAS号：
性质：以碳化硅陶瓷为基和以碳化硅晶须为增强剂的新型陶瓷材料。通过晶须的载荷转移、拔出及裂纹偏转作用，获得比普通碳化硅更高的强度和韧性。使用温度达1400℃。是一种重要的高温结构陶瓷。用于燃气轮机叶片等高温部件和耐磨件制造。采用原位生长工艺和烧结工艺制取。
CAS号：
性质：以碳化硅陶瓷为基和以碳化硅晶须为增强剂的新型陶瓷材料。通过晶须的载荷转移、拔出及裂纹偏转作用，获得比普通碳化硅更高的强度和韧性。使用温度达1400℃。是一种重要的高温结构陶瓷。用于燃气轮机叶片等高温部件和耐磨件制造。采用原位生长工艺和烧结工艺制取。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条