硬度(Hardness):PH13-8Mo 的硬度通常在 Rockwell C 36 到 38 之间,具有良好的耐磨性和耐疲劳性。 密度(Density):PH13-8Mo 的密度约为 7.8 g/cm³,与其他不锈钢相似。 热膨胀系数(Coefficient of Thermal Expansion):PH13-8Mo 的热膨胀系数约为 10.8 µm/m·°C(20°C 到 100°C),考虑到这一特...
利用透射电镜(TEM)和X射线衍射(XRD)等实验手段对该钢热处理后的微观组织变化进行了研究,分析了PH13-8Mo钢在不同热处理温度下的奥氏体形貌及其分布状态。着重分析了变化曲线中抗拉强度的变化特征与NiAl析出强化相之间的关系。通过以上研究,探讨了热处理温度对PH13-8Mo钢各种力学性能指标的影响规律,确定了适宜的热...
lower level.This paper discusses the suitability of a high-quality PH 13-8 Mo steel for critical helicopter usage,using a simulated application in Australian service to evaluate its fatigue performance particularly athigh R ratio and other properties such as density, corrosion properties and cost in...
在pH值为3的Na2 SO4+H2 SO4溶液中,采用电化学极化曲线、循环极化曲线、电化学阻抗谱(EIS)结合静态浸泡实验,分别研究了Cl-质量分数(1%、3.5%和7%)和溶液温度(4、25、50和80℃)对马氏体沉淀硬化不锈钢PH13-8Mo电化学腐蚀行为的影响,并采用点缺陷PDM模型结合闭塞电池理论对其腐蚀机理进行了分析.结果表明,...
PH13-8Mo is a precipitation hardened martensitic steel, but a large amount of austenite has been observed as well. The precipitation hardening results from the formation of small coherent NiAl precipitates in the martensite phase. Their size, size distribution and density are found to be ...
The corrosion current density gradually decreases with increasing the solution pH and decreasing Cl – concentration and solution temperature. Pits are initiated on the sample surface in the presence of the Cl – and gradually developed into uniform corrosion with increasing the Cl – concentrations. ...
A high dislocation density was observed in the lath martensitic structure. The higher strength and lower ductility observed at low aging temperatures was attributed to both the high dislocation density and the precipitation of Β -NiAl. When samples were aged at high temperatures (> 566 °C), a...
The corrosion current density gradually decreases with increasing the solution pH and decreasing Clconcentration and solution temperature. Pits are initiated on the sample surface in the presence of the Cland gradually developed into uniform corrosion with increasing the Clconcentrations. Moreover, the ...
The corrosion performance of the interface region was degraded significantly, ascribed to the formation of high density of fine chromium-rich carbides. The corrosion onset at the interface region was initiated at the carbide/matrix interface in the CHAZ and PMZ, where chromium depleted regions at ...
These assertions are supported by a simplistic trapping model for PH 13-8 Mo which shows that both the hydrogen trap binding energy and the trap density for the PdAl trapping site are greater than the hydrogen trap binding energy and density for prior austenite grain boundaries....