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1)  austenitic nitriding
奥氏体渗氮
1.
In order to explore the industrial value of austenitic nitriding and intermediate temperature tempering technology,further research was made by 20Cr steel.
根据纯铁制备的高氮奥氏体中温转变获得超高硬度的研究成果,采用广泛应用的20Cr 钢进行奥氏体渗氮中温回火试验,以探索奥氏体渗氮工艺工业应用的可能和价值。
2.
20Cr steel was treated by 640℃ austenitic nitriding and oil quenching,and then tempered at 220°C for different time.
将20Cr钢经过640℃奥氏体渗氮后油淬,然后于220℃用不同时间回火。
2)  austenitic nitrocarburizing
奥氏体氮碳共渗
1.
The process of austenitic nitrocarburizing with ammonia and methanol was studied.
采用氨气和甲醇进行了奥氏体氮碳共渗试验 ,研究了渗层的相组成、相的微观形态、渗层氮浓度分布及硬度分布。
3)  austenitic nitrocarburizing treatment(ANCT)
奥氏体氮碳共渗处理(ANCT)
4)  high-nitrogen austenite
高氮奥氏体
1.
The microstructure of the intermediate temperature transformation of high-nitrogen austenite at 225℃was investigated by means of OM,XRD,SEM and TEM.
采用OM,XRD,SEM和TEM研究了由纯铁穿透渗氮所得高氮奥氏体经225℃中温转变后的显微组织,确定了转变产物的种类和形态。
2.
The fine nitrides of γ′-Fe 4N were firstly precipitated from high-nitrogen austenite when isothermally treated at 225℃,and then the metastable system,γ′-Fe 4N and nitrogen-depleted γ-Fe,was formed.
研究含氮量在 ( 2 6~ 2 7) %wt范围的过饱和高氮奥氏体 2 2 5℃中温转变过程中发现 ,Fe N中温转变与Fe C系中温贝氏体转变有明显不同。
5)  high nitrogen austenite
高氮奥氏体
1.
A further study on the characteristics of mediate temperature transformation of high nitrogen austenite was carried out using transmission electronic microscopy (TEM).
用透射电子显微镜 (TEM )对高氮奥氏体中温回火的相变特征作进一步的观察 ,发现晶内首先发生连续相变形成亚稳定体系 ,该连续分解产物与晶界、位错等缺陷处的非连续分解产物各自形成独立的分解区域。
2.
The characteristics of mediate temperature transformation, occurred on the grain boundaries of the high nitrogen austenite tempered at 225 °C , were studied by SEM and TEM.
利用 SEM和 TEM研究了高氮奥氏体 2 2 5°C等温过程中原奥氏体晶界区域的分解现象 。
3.
The discontinuous transformations in high nitrogen austenite after 3.
用 TEM对高氮奥氏体 2 2 5℃中温回火 3。
6)  nitrogen austenite
含氮奥氏体
补充资料:奥氏体-贝氏体球铁
分子式:
CAS号:

性质:又叫奥-贝球铁。基体组织为奥氏体加贝氏体组织的球墨铸铁。这类球铁硅含量一般在1.4%~3.8%。含锰量小于0.5%,与普通球铁比较硅偏高、锰偏低。通过调节化学成分与热处理获得理想的奥-贝球铁的基体组织为针状贝氏体或无碳贝氏体一富碳奥氏体。这类球铁具有优良的综合机械性能、强度高、耐磨性好、韧性好、特别是有高的缺口韧性,可代替钢,用于制作重要受力结构件,如曲轴、齿轮、凸轮轴等。

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