A new kind offl biomedical titanium alloy, Ti-35Nb-4Sn-6Mo-9Zr, composed of non-toxic elements Nb, Mo, Zr and Sn with lower elastic modulus and higher strength was designed based on d-electron alloy design theory and ...A new kind offl biomedical titanium alloy, Ti-35Nb-4Sn-6Mo-9Zr, composed of non-toxic elements Nb, Mo, Zr and Sn with lower elastic modulus and higher strength was designed based on d-electron alloy design theory and JMatPro software using orthogonal experiment. The microstructure and basic mechanical properties of designed alloy were investigated. The results show that the alloy is composed of single fl equiaxed grains after solution treatment at 800 ~C. Compared with Ti-6A1-4V, the mechanical properties of the designed alloy are more excellent： E=65 GPa, σb=834 MPa, σ0.2=802 MPa, and σ=11%, which is expected to become a promising new type implanted material. The research approach adopted can reduce the experimental time and cost effectively, and get the ideal experimental results.展开更多
Recently, there has been an increasing awareness and implementation of practices associated with Partnering and Total Quality Management (TQM) in the construction industry. Partnering and TQM both seek to enhance cons...Recently, there has been an increasing awareness and implementation of practices associated with Partnering and Total Quality Management (TQM) in the construction industry. Partnering and TQM both seek to enhance construction outcomes, yet rigorous studies of Partnering and TQM have been conducted separately and have not carefully examined common or unique practices associated with these techniques. This paper presents the findings of a theoretical analysis of an integrated approach for the use of Partnering and TQM. A matrix approach has been used to explore the extent to which Partnering may improve TQM implementation in construction. The matrix is based around 3 indexes, namely; the Degree of Partnering, the Degree of TQM and the Project Success Index and enables the relationship between Partnering and TQM to be analysed quantitatively. It also assists in understanding the trends of Partnering and TQM and their relationship to project performance. The results of a case study using this matrix are also presented. It has been concluded that the integrated use of Partnering can facilitate improvements in the way TQM is implemented in construction.展开更多
The structure, working principles, and main technological parameters of the premajet derusting machine are introduced. Experiments were made to test the relationship among such jet parameters as working pressure, rate...The structure, working principles, and main technological parameters of the premajet derusting machine are introduced. Experiments were made to test the relationship among such jet parameters as working pressure, rate of water flow, abrasive weight consistency and derusting efficiency. Reasonable parameters were decided. Results prove that the derusting machine is characterized by its high derusting efficiency (as high as 20m 2/h), good derusting quality (as good as ISO8501 1 Sa 2.5), and low specific power consumption (about 0.3kW·h/m 2). Therefore it is a new type of high efficiency derusting machine.展开更多
基金Project(BE2011778)supported by Science and Technology Support Program of Jiangsu Province,ChinaProject(20133069014)supported by Aeronautical Science Foundation of China
文摘A new kind offl biomedical titanium alloy, Ti-35Nb-4Sn-6Mo-9Zr, composed of non-toxic elements Nb, Mo, Zr and Sn with lower elastic modulus and higher strength was designed based on d-electron alloy design theory and JMatPro software using orthogonal experiment. The microstructure and basic mechanical properties of designed alloy were investigated. The results show that the alloy is composed of single fl equiaxed grains after solution treatment at 800 ~C. Compared with Ti-6A1-4V, the mechanical properties of the designed alloy are more excellent： E=65 GPa, σb=834 MPa, σ0.2=802 MPa, and σ=11%, which is expected to become a promising new type implanted material. The research approach adopted can reduce the experimental time and cost effectively, and get the ideal experimental results.
文摘Recently, there has been an increasing awareness and implementation of practices associated with Partnering and Total Quality Management (TQM) in the construction industry. Partnering and TQM both seek to enhance construction outcomes, yet rigorous studies of Partnering and TQM have been conducted separately and have not carefully examined common or unique practices associated with these techniques. This paper presents the findings of a theoretical analysis of an integrated approach for the use of Partnering and TQM. A matrix approach has been used to explore the extent to which Partnering may improve TQM implementation in construction. The matrix is based around 3 indexes, namely; the Degree of Partnering, the Degree of TQM and the Project Success Index and enables the relationship between Partnering and TQM to be analysed quantitatively. It also assists in understanding the trends of Partnering and TQM and their relationship to project performance. The results of a case study using this matrix are also presented. It has been concluded that the integrated use of Partnering can facilitate improvements in the way TQM is implemented in construction.
文摘The structure, working principles, and main technological parameters of the premajet derusting machine are introduced. Experiments were made to test the relationship among such jet parameters as working pressure, rate of water flow, abrasive weight consistency and derusting efficiency. Reasonable parameters were decided. Results prove that the derusting machine is characterized by its high derusting efficiency (as high as 20m 2/h), good derusting quality (as good as ISO8501 1 Sa 2.5), and low specific power consumption (about 0.3kW·h/m 2). Therefore it is a new type of high efficiency derusting machine.
