基本信息
项目批准号：U1404502
申请代码：E0101
项目名称：舰船钛合金搅拌摩擦焊用搅拌头材料的组织设计与高温摩擦磨损机理研究
项目负责人：郁炎
依托单位：中国船舶重工集团公司第七二五研究所（洛阳船舶材料研究所）
研究期限：2015-01-01 至 2017-12-31
资助经费：29.0（万元）

项目摘要
中文摘要：
本项目以舰船钛合金搅拌摩擦焊用Co-Al-W-Ni-Cr基搅拌头材料的开发与应用为主线，首先研究不同合金元素含量及其相互作用、热处理制度对Co-Al-W-Ni-Cr基合金组织中相组成、相分数、相形貌、相分布、相稳定性的影响规律，为Co-Al-W-Ni-Cr合金的组织设计提供理论指导。然后针对设计的Co-Al-W-Ni-Cr基合金成分，分别在室温条件及搅拌摩擦焊工艺条件下，考察合金组织相对于舰船钛合金配磨材料的磨损失重与摩擦系数，并揭示配磨后合金表面中磨斑形貌、磨屑形貌及产物的形成规律。最后确定Co-Al-W-Ni-Cr基合金的最佳成分范围与组织特征，阐明该类合金的高温摩擦磨损机理，为新型搅拌头材料在舰船钛合金搅拌摩擦焊的工程化应用奠定理论基础和工艺指导。
英文摘要：
Focusing on the development and application of Co-Al-W-Ni-Cr base rotating tool material used for the friction stir welding of naval titanium alloys, this research first study the effect of content and interaction of alloying elements and heat treatment process on the phase composition, phase fraction, phase morphlogy, phase distribution, phase stability, in order to provide theoretical guide on the microstructural design of Co-Al-W-Ni-Cr base alloys. Then based on some selected naval titanium alloys, study friction and wear mass loss and friction coefficient of designed alloy microstructures, to accquire the formation state of surface morphology, microstructure and composition of wear debris.Finally determine the optimal composition range and microstructure characteristics, and clarify the high-temperature friction and wear mechanism of such kind of Co-Al-W-Ni-Cr base alloys, which can provide theorical base and technical guide of new ratating tool materials for engineering applications of friction stir welding of naval titanium alloys.
                                                                                                                                                                             ——来自https://kd.nsfc.gov.cn/