用于抗应力腐蚀裂开的细粒镍基合金及其设计方法

• Format: Patent
• Language: Chinese
• Published: 29.03.2017
• Subjects: ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

提供类具有抗应力腐蚀裂开的细粒结构的镍基合金，以及生产在该类中其他合金的合金设计方法。该合金在与合金622类似的应用中用作适当的焊接材料。对于其他原因，比如磨损、碰撞、磨蚀、腐蚀等，这些新合金的细粒结构也可以是有利的。这些合金具有与合金622相似的相，因为它们主要由奥氏体镍构成，然而当其经历焊接过程固有的从液态的冷却速率时，相对于合金622常见的长枝状颗粒，相形态是更细粒结构。 A class of nickel based alloys having a fine grain structure resistant to stress corrosion cracking, and methods of alloy design to produce further alloys within the class are presented. The alloys act as suitable welding materials in similar applications to that of Alloy 622. The fine-grained structure of these novel alloys may also be advantageous for other reasons as well such as wear, impact, abrasion, corrosion, etc. These alloys have similar phases to Alloy 622 in that they are composed primarily of austenitic nickel, however the phase morphology is a much finer grained structure opposed to the long dendritic grains common to Alloy 622 when it is subject to cooling rates from a liquid state inherent to the welding process.