The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were obser...The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were observed in the joints. No desirable joints were achieved with the consideration of weld geometries and joint performances. From the cross-sectional morphology, the joint evolution during the RMW of Pt alloy and 316 LVM SS wires was developed, which involved cold collapse and heat promoted set-down of Pt alloy wire, unbalanced heating at interface, molten phase squeezed out, and defect formation. Finally, the defect formation was also discussed.展开更多
This study reviews important variables related to joint venture performance and identifies the key determinants of joint venture performance in Cambodia. A model of joint venture performance in Cambodia is proposed an...This study reviews important variables related to joint venture performance and identifies the key determinants of joint venture performance in Cambodia. A model of joint venture performance in Cambodia is proposed and tested. Finally guidelines for successful joint venture performance in Cambodia are proposed. Based on a study of 62 firms and interviews with 19 joint venture mangers and government officers, it was found that the most important factors driving the formation of a joint venture included access to an emerging new market, utilization of abundant and cheap labor, and existence of government incentives. The most serious obstacles to joint venture performance in Cambodia were corruption, lack of physical infrastructure, bureaucracy, and competition from a black market and smuggling. For the results indicate there are significant correlations between performance and trust, control, commitment, and ownership. Suggested guidelines to improve joint venture performance in Cambodia are proposed.展开更多
基金Funded by the National Natural Science Foundation of China(No.51365044)the State Key Laboratory for Mechanical Behavior of Materials(No.20111203)the State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology(No.AWJ-M13-09)
文摘The surface morphology, cross-sections, and joint break force（JBF） of joints welded under different electrode forces were studied. The defects, such as electrode sticking, notch, and excessive expulsions, were observed in the joints. No desirable joints were achieved with the consideration of weld geometries and joint performances. From the cross-sectional morphology, the joint evolution during the RMW of Pt alloy and 316 LVM SS wires was developed, which involved cold collapse and heat promoted set-down of Pt alloy wire, unbalanced heating at interface, molten phase squeezed out, and defect formation. Finally, the defect formation was also discussed.
文摘This study reviews important variables related to joint venture performance and identifies the key determinants of joint venture performance in Cambodia. A model of joint venture performance in Cambodia is proposed and tested. Finally guidelines for successful joint venture performance in Cambodia are proposed. Based on a study of 62 firms and interviews with 19 joint venture mangers and government officers, it was found that the most important factors driving the formation of a joint venture included access to an emerging new market, utilization of abundant and cheap labor, and existence of government incentives. The most serious obstacles to joint venture performance in Cambodia were corruption, lack of physical infrastructure, bureaucracy, and competition from a black market and smuggling. For the results indicate there are significant correlations between performance and trust, control, commitment, and ownership. Suggested guidelines to improve joint venture performance in Cambodia are proposed.
