采用CMT(Cold Metal Transfer)焊接工艺对1.8mm厚MnE21挤压镁合金型材进行焊接试验,利用扫描电微镜、万能拉伸试验机、金相显微镜和显微硬度仪等分析测试设备对焊接接头的组织、力学性能及端口形貌等进行了分析。试验结果表明:采用CMT...采用CMT(Cold Metal Transfer)焊接工艺对1.8mm厚MnE21挤压镁合金型材进行焊接试验,利用扫描电微镜、万能拉伸试验机、金相显微镜和显微硬度仪等分析测试设备对焊接接头的组织、力学性能及端口形貌等进行了分析。试验结果表明:采用CMT焊接工艺,在焊接电流110A、焊接电压12.4 V、焊接速度600mm/min时,可以获得良好的焊接接头,焊缝区的晶粒明显比热影响区和母材细小,是等轴晶组织。试样抗拉强度达到176.5MPa,断裂位置发生在热影响区,具有脆韧混合断裂特征。焊缝区的平均硬度值为77HV,高于母材和热影响区。展开更多
The research investigates the role of managerial competences （MC） and knowledge dynamics for effective knowledge transfer （EKT） in an international market during the Greek economic crisis of 2007-2010. Like other ...The research investigates the role of managerial competences （MC） and knowledge dynamics for effective knowledge transfer （EKT） in an international market during the Greek economic crisis of 2007-2010. Like other economies, Greece faced a serious recession in 2009, which submerged the country into a major funding crisis and resulted in austerity measures. A Troika fund was obtained with the aim of precluding Greece from economic failure. The paper focuses on the managers＇ perspectives as to how new products and local opportunities are exploited via EKT in subsidiaries of multinational enterprise （/VINE） hotels operating in Athens, Greece. Semi-structured interviews with 15 general managers and practitioners of subsidiaries operating in Athens are used representing a range of different activities and sizes. The results identify how managerial communication competences underpin the process of inter- or intra-organizational KT between and within subsidiaries. The research highlights that there is a call to cultivate communication abilities, flexibility, a greater level of autonomy, and open door strategies with the purpose of turning knowledge into commercial ends, through organizational innovation and new product developments. Recently, there has been little focus on the practice influence of managerial and communication skills on the management of MNEs hotels in a competitive host country, of most previous studies estimating the call for competences rather than the genuine owning of these among managers and practitioners. This article sheds the light on a great number of promising activities to utilize inter/intra-organizational KT. Specifically, the managerial communication competences model operates as an initial toolkit for managerial decision-making when facing severe competition in the host country in terms of utilizing, communicating, or seeking to apply the best internal/external KT practices.展开更多
文摘采用CMT(Cold Metal Transfer)焊接工艺对1.8mm厚MnE21挤压镁合金型材进行焊接试验,利用扫描电微镜、万能拉伸试验机、金相显微镜和显微硬度仪等分析测试设备对焊接接头的组织、力学性能及端口形貌等进行了分析。试验结果表明:采用CMT焊接工艺,在焊接电流110A、焊接电压12.4 V、焊接速度600mm/min时,可以获得良好的焊接接头,焊缝区的晶粒明显比热影响区和母材细小,是等轴晶组织。试样抗拉强度达到176.5MPa,断裂位置发生在热影响区,具有脆韧混合断裂特征。焊缝区的平均硬度值为77HV,高于母材和热影响区。
文摘The research investigates the role of managerial competences （MC） and knowledge dynamics for effective knowledge transfer （EKT） in an international market during the Greek economic crisis of 2007-2010. Like other economies, Greece faced a serious recession in 2009, which submerged the country into a major funding crisis and resulted in austerity measures. A Troika fund was obtained with the aim of precluding Greece from economic failure. The paper focuses on the managers＇ perspectives as to how new products and local opportunities are exploited via EKT in subsidiaries of multinational enterprise （/VINE） hotels operating in Athens, Greece. Semi-structured interviews with 15 general managers and practitioners of subsidiaries operating in Athens are used representing a range of different activities and sizes. The results identify how managerial communication competences underpin the process of inter- or intra-organizational KT between and within subsidiaries. The research highlights that there is a call to cultivate communication abilities, flexibility, a greater level of autonomy, and open door strategies with the purpose of turning knowledge into commercial ends, through organizational innovation and new product developments. Recently, there has been little focus on the practice influence of managerial and communication skills on the management of MNEs hotels in a competitive host country, of most previous studies estimating the call for competences rather than the genuine owning of these among managers and practitioners. This article sheds the light on a great number of promising activities to utilize inter/intra-organizational KT. Specifically, the managerial communication competences model operates as an initial toolkit for managerial decision-making when facing severe competition in the host country in terms of utilizing, communicating, or seeking to apply the best internal/external KT practices.
