Calibrating magnetic instruments to measure the delta ferrite content of austenitic and duplex austenitic - ferrite stainless steel weld metal , procedures for 奥氏体和双奥氏体-铁素体不锈钢焊接金属中铁酸盐含量测试磁仪器的校准程序
Non - destructive testing - ultrasonic testing of austenitic and austentitic - ferritic stainless steels flat products of thickness equal to or greater than 6 mm reflection method 无损检验.厚度大于或等于6mm的奥氏体铁素体不锈钢体钢扁平轧材的超声波检测
Non - destructive testing - ultrasonic testing of austenitic and austenitic - ferritic stainless steels flat products of thickness equal to or greater than 6 mm reflection method 无损检验.对厚度等于或大于6mm的奥氏体和奥氏体铁素体不锈钢扁平产品的超声波检验
Medico - surgical equipment - materials for ancillary positioning instruments for surgical instrument - martensitic , precipitation hardening , austenitic and austeno - ferritic stainless steels 外科设备.外科设备的辅助器械用材料.马氏体淀积硬化奥氏体和奥氏铁素体不锈钢
The development of ferritic stainless steel crsomo used in phosphoric production equipments has been introduced in this paper . the chemical composition , smelting , foundry and heat treatment processes of crsomo have been designed 本文介绍了磷化工设备用铁素体不锈钢cr30mo的研制，包括钢的化学成分设计，熔炼、铸造及热处理工艺设计。
The foundry and heat treatment processes have been explored in order to improve properties of stainless steel . the method of solution heat treatment at high temperature with cooling controlled has been put forward 为了全面改善cr30mo铁素体不锈钢的性能，充分发挥不锈钢的微合金化作用，对于不锈钢的热处理工艺进行探讨，提出高温固溶处理，控制冷却措施。
With carbon content increasing , the carbide network on the fertile grain boundary sprouting and propagating . the fracture mode has been changed from cleavage to along boundary and the intergranular corrosion induced by solution chromium decreasing 随碳含量提高，晶界上碳化物萌发、扩展呈网状，铸件脆断由解理断裂发展为沿晶断裂，同时铁素体不锈钢晶间腐蚀倾向增大。
The effects of alloy elements nb , v , ti , re on mechanical properties , corrosion - abrasion resistance , fragility of ferritic stainless steel cr30mo have been investigated . the results show microalloy is beneficial to increas corrosion - abrasion resistance and suppress brittleness of cr30mo 研究了铌、钒、钛、稀土元素对不锈钢的组织结构、力学性能、磨蚀性能和脆性的影响，结果表明微合余化是提高铁素体不锈钢耐蚀性，降低脆性的有效途径。
X - ray diffraction spectrum , empa methods and several tests including mechanical properties , electrochemistry , corrosion wear , on - site plate hanging , the microstructure of steel has been observed and analyzed , performance has been studied , and corrosion - abrasion , fragility mechanism , and microalloy application in ferritic stainless steel have been explored comprehensively . the test results of electrochemistry , corrosion wear and on - site plate hanging have been analyzed . the analytical result shows that crsomo has enough corrosion resistance in phosphoric acid slurry because it has high chromium and low carbon 通过实验室的电化学试验、腐蚀磨损试验和磷肥厂的现场挂片试验结果分析，表明： cr30mo铁素体不锈钢高铬低碳的配合，保证其在磷酸料浆中具有足够的耐蚀性： cr30mo中( fe ， cr ) _ 23c _ 6 、 ( fe ， cr ) _ 7c _ 3 、 mo _ 2c 、等碳化物硬质点从基体的弥散沉淀析出可提高钢的硬度和耐磨性，使得钢在磷酸料浆中具有良好的耐磨蚀效果。
So cr30mo has good corrosion - abrasion resistance in phosphoric acid slurry . based on the analyses of microstructure , mechanical properties , corrosion - abrasion resistances and fracture of cast ferritic stainless steel cr30mo with various carbon content , it can be affirmed that high carbon is advantage to increase steel hardness , but disadvantage to suppress brittleness and increase corrosion - abrasion resistance 对不同含碳量的铁素体不锈钢cr30mo的组织结构、力学性能、磨蚀性能和断口形貌的分析后认为，碳含量增大，对钢的硬度提高有利，但对钢的韧性、耐磨蚀性很不利。
