搅拌摩擦焊概述（一）

搅拌摩擦焊专栏是《现代焊接》杂志与中国搅拌摩擦焊中心合作开辟的搅拌摩擦焊技术的科普专栏，包括以下专题——搅拌摩擦焊概述，搅拌摩擦焊优点。搅拌摩擦焊原理，搅拌摩擦焊历史，搅拌摩擦焊应用，搅拌摩擦焊设备，搅拌头设计和材料，搅拌摩擦焊可控参数和过程控制，搅拌摩擦焊匙孔去除技术，搅拌摩擦焊工艺改进，搅拌摩擦焊接头性能，搅拌摩擦焊点焊，铜、镁、钛、钢的搅拌摩擦焊，搅拌摩擦焊接头及夹具设计，搅拌摩擦焊检测技术，搅拌摩擦焊质量控制等。敬请关注![编者按]     

搅拌摩擦焊最新技术突破——无轴肩搅拌摩擦焊技术研究

2002年，中国第一家专业化搅拌摩擦焊技术授权公司——中国搅拌摩擦焊中心即北京赛福斯特技术有限公司成立，标志着搅拌摩擦焊技术在中国市场（包括香港、澳门和台湾）的研发及工程应用工作的正式启动。     

赛福斯特公司标准化搅拌摩擦焊设备（三）——标准化台式搅拌摩擦焊设备

2002年，中国第一家专业化的搅拌摩擦焊技术授权公司——中国搅拌摩擦焊中心暨北京赛福斯特技术有限公司成立，标志着搅拌摩擦焊技术在中国市场的研发及工程应用工作的正式启动。     

搅拌摩擦焊及其研究现状

搅拌摩擦焊是20世纪90年代初发明的一种固相连接技术，可以焊接通常 熔焊方法难以焊接的铝合金、钛合金等，并且具有一系列独特的优点，介绍了搅拌摩擦焊的工艺过程，分析了搅拌摩擦焊的特点、焊缝组织和性能以及影响搅拌摩擦焊的因素，综述了搅拌摩擦焊的国内外研究现状。     

汽车制造驶上搅拌摩擦焊之路

新世纪汽车制造轻量化的发展趋势使铝合金、镁合金等轻质合金材料所占的比重越来越大，从而促进了新型搅拌摩擦焊技术在汽车制造中的应用。在简要介绍搅拌摩擦焊技术的基础上，重点一对搅拌摩擦焊技术在汽车稠造业中的应用进行了探讨和综述，并对国内外的搅拌摩擦焊工艺装备进行了简单介绍。     

赛福斯特公司标准化搅拌摩擦焊设备（一）——静龙门搅拌摩擦焊设备

2002年,中国第一家专业化的搅拌摩擦焊技术授权公司——中国搅拌摩擦焊中心暨北京赛福斯特技术有限公司成立,开启了搅拌摩擦焊技术在中国的发展大门。     

铝合金双面搅拌摩擦焊初步研究

提出了双面搅拌摩擦焊这种新的焊接方法，对比研究了6K32-T4铝合金搅拌摩擦焊与双面搅拌摩擦焊接头的组织和硬度，并对双面搅拌摩擦焊焊缝进行了XRD分析。研究发现：铝合金双面搅拌摩擦焊与搅拌摩擦焊焊缝组织分区相同；双面搅拌摩擦焊焊缝的硬度略低于搅拌摩擦焊，且焊缝硬度下降区域范围更大；双面搅拌摩擦焊后焊缝依然保持为原有相组成；双面搅拌摩擦焊比搅拌摩擦焊焊接线能量更大，采用双面搅拌摩擦焊代替搅拌摩擦焊有利于提高焊接效率并消除焊缝隧道型缺陷、改善焊缝的性能。     

镁合金搅拌摩擦焊接技术的研究进展

搅拌摩擦焊是一种节能、节材、清洁、高效的新型金属连接技术，特别适于轻金属的连接。铝合金搅拌摩擦焊技术已经在很多领域实现了工业应用，而镁合金搅拌摩擦焊的研究才刚刚开始。对搅拌摩擦焊的技术特点作了简要的介绍，并对镁合金搅拌摩擦焊接工艺以及材料的组织与性能方面的研究进行了综述，并对以后的研究方向作了展望。     

从搅拌摩擦焊及相关技术的发展看技术创新

搅拌摩擦焊及相关技术的发展充分体现了现代科技创新的综合集成特点，在引进、消化与吸收国外先进技术的同时，必须注意创新发展。从搅拌摩擦焊和摩擦加工技术的发展过程，初步探讨了摩擦焊和相关工艺创新问题。     

《电焊机》杂志2004年1～6月份刊登计划

刊登时间刊登主题主要内容征稿截时间2004年1月搅拌摩擦焊技术2003年12月30日搅拌摩擦焊技术国内外发展现状及前景搅拌摩擦焊原理黑色及有色金属材料的搅拌摩擦焊工艺搅拌摩擦焊技术在实际生产中的应用搅拌摩擦焊接设备的研制搅拌头性能及搅拌头材料的发展2004年2月现代船舶工业高效焊接技术2003年12月30日我国现代船舶工业的发展状况船舶焊接技术现状与展望新型进口和国产焊接与切割设备在船舶焊接中的应用船舶制造中高效焊接技术CO2气体保护焊在修造船中的应用船舶厚板自动立向上焊接法船舶高效焊接材料的发展趋势2004年3月CO2焊接技术2…     

Review on underwater friction stir welding: A variant of friction stir welding with great potential of improving joint properties

Friction stir welding (FSW) is a solid-state welding process which is capable of joining materials which are relatively difficult to be welded by fusion welding process. Further, this process is highly energy-efficient and environmental-friendly as compared to the fusion welding. Despite several advantages of FSW over fusion welding, the thermal cycles involved in FSW cause softening in joints generally in heat-treatable aluminum alloys (AAs) due to the dissolution or coarsening of the strengthening precipitates leading to decrease in mechanical properties. Underwater friction stir welding (UFSW) can be a process of choice to overcome these limitations. This process is suitable for alloys that are sensitive to heating during the welding and is widely used for heat-treatable AAs. The purpose of this article is to provide comprehensive literature review on current status and development of UFSW and its importance in comparison to FSW with an aim to discuss and summarize different aspects of UFSW. Specific attention is given to basic principle including material flow, temperature generation, process parameters, microstructure and mechanical properties. From the review, it is concluded that UFSW is an improved method compared with FSW for improving joint strength. Academicians, researchers and practitioners would be benefitted from this article as it compiles significantly important knowledge pertaining to UFSW.     

Recent progress in corrosion protection of friction stir welded high-strength aluminum alloy joints

Friction stir welding (FSW) has been widely used in many industries, with which high-strength aluminum alloys can be well joined. However, the corrosion resistance of FSW high-strength Al alloy joints is relatively poor, which limits their industrial applications. The joints shall be protected against corrosion. In this review, therefore, the current status and development of corrosion protection for FSW high-strength Al alloy joints are presented. Particular emphasis has been given to different protection methods: lowering heat input, post-weld heat treatment, surface modification and spray coatings. Finally, opportunities are identified for further research and development in corrosion protection of FSW high-strength Al alloy joints.     

搅拌摩擦焊研究进展及前景展望

搅拌摩擦焊(Friction Stir Welding，简称FSW)是针对焊接性差的铝合金开发的一种新型固相焊接工艺，由英国焊接研究所TWI(The Welding Institute)于1991年开发的专利技术。文中对搅拌摩擦焊工艺进行简单介绍并对研究现状做了比较详尽的总结，涉及搅拌摩擦焊机理即塑性流体运动情况及“洋葱”圆环的形成机理、适用母材、接头微观组织、力学性能、焊接工具、复合焊接工艺及搅拌摩擦焊应用领域，并展望FWS的发展前景。     

常规FSW与双轴肩FSW对铝合金接头组织和性能的影响

对采用常规FSW和双轴肩FSW所得到焊接接头性能进行试验研究,测试了两种焊接得到的焊接接头的抗拉强度、屈服强度和断后伸长率,并对接头的微观组织和断口形貌进行了观察和分析.结果表明,双轴肩FSW接头横截面形成了一组由内向外扩张“洋葱环”状的椭圆环;常规FSW焊核区与热力影响区之间组织发生明显变化;硬度的最低处为双轴肩FSW前进侧热力影响区,最高处为双轴肩FSW接头上表面焊核区;常规搅拌摩擦焊接头的综合力学性能最好,双轴肩次之;断口形貌分析表明,接头断裂模式均为韧性断裂,且常规FSW断口韧窝尺寸比双轴肩FSW接头韧窝小而深,表现出更好的塑性.     

Alternative friction stir welding technology for titanium–6Al–4V propellant tanks within the space industry

Friction stir welding (FSW) offers an appealing solid state joining alternative to traditional fusion welding techniques for titanium alloys because it reduces problems associated with high temperature processing. Propellant tanks are a critical component of every spacecraft and contain several weld seams and a prime candidate for this innovative technology. This paper reviews the current technological maturity of FSW relative to titanium alloys and considers the application with respect to a pressure vessel. FSW is currently in a period of significant investment by large engineering companies and international research institutions. The technology is advancing and evolving to cater for high temperature alloys. Stationary shoulder FSW and hybrid techniques show promising potential with respect to Ti–6Al–4V. The tool material and limited process window for this material are restrictive factors at present but can be overcome with future development.     

Friction stir welding industrialisation and research status

This paper intends to provide a perspective on the current development of the friction stir welding (FSW) technology. The industrialisation of the technology and related research were assessed by analysing patent and scientific publications databases. The literature reviews on FSW and related technologies were also collected and analysed. The work performed enabled to understand the main areas of industry/research where the FSW technology is being applied/explored and the geographical distribution of the main players in its implementation/research. The main FSW process variants, the materials already welded/processed using it, as well as the applications envisaged, were also analysed. The data collected shows that the FSW technology, originally developed for the joining of light alloys, became a research tool with interest in several fields of engineering and material science.     

搅拌摩擦焊技术的新起点——钢的焊接

搅拌摩擦焊技术已经成功实现了在铝合金结构中的工业化应用,但是在钛合金、钢等高熔点材料结构焊接中的研究仍在进行之中.文中对钢的搅拌摩擦焊技术难点进行了分析,并对C-Mn钢等典型钢结构材料的搅拌摩擦焊接头性能及组织进行了对比分析.结果表明,搅拌摩擦焊接头的细晶组织有助于提高钢结构的性能,具有一定的推广应用潜力.     

搅拌摩擦焊接过程的有限元模拟

对摩擦搅拌焊接工艺进行数值仿真，建立了搅拌摩擦焊接的二维数值计算模型，通过数值手段进行焊接参数研究。并研究了焊接工艺过程中焊件材料的流动情况以及在焊接过程中材料的应力和应变情况，且与已有结果进行比较。证实了所建立模型的正确性与可靠性。     

Study of hybrid welding repair process of friction stir welding grove defect

Abstract

Gas tungsten arc welding (GTAW) repair process and GTAW+FSW (friction stir welding) hybrid repair process are studied to remove the large size groove defect formed during FSW. The experimental results indicate that the groove defect can be removed by both the repair processes. The tensile strength of the GTAW repair joint is only 55% of that of the base metal. The tensile fracture occurs at the transition zone between the weld zone and the heat affected zone, and the fracture surface of the repair joint is characterised by clear brittleness. In contrast, the GTAW+FSW hybrid repair joint has a high tensile strength equivalent to 70% of that of the base metal. The tensile fracture occurs at the overlap thermomechanically affected zone between the two FSW nuggets, and the fracture feature of the hybrid repair joint is partially plastic and partially brittle.