A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Mat...A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Materials Research Group, which was found in the early eighties of last century. The Center is focusing in the basic and applied research, and development of advanced metallic materials and their processing technology. It also functions as an organization展开更多
Multi-principal-element alloys(MPEAs)are attracting increasing attentions because of their high strength and ductility,high fracture toughness,excellent corrosion resistance,outstanding thermal-softening resistance an...Multi-principal-element alloys(MPEAs)are attracting increasing attentions because of their high strength and ductility,high fracture toughness,excellent corrosion resistance,outstanding thermal-softening resistance and high oxidation resistance.Moreover,gradient structures(GSs)have been shown to be effective in alleviating the strength-ductility trade-off although strength and ductility are mutually exclusive properties for metals,which provides an opportunity for developing highperformance MPEAs.Here,we summarized four processing methods for creating GSs in MPEAs,including rotationally accelerated shot peening(RASP),ultra-precision machining technology(UPMT),cyclic dynamic torsion(CDT),and ultrasonic surface rolling processing(USRP).Principles,advantages,disadvantages,and typical applications of these methods are discussed in this work.展开更多
Recent years witness an increased awareness of the value of both metrics data collection and measurement method standardization to software organizations. This trend is coupled with the commitment of both researchers ...Recent years witness an increased awareness of the value of both metrics data collection and measurement method standardization to software organizations. This trend is coupled with the commitment of both researchers and practitioners to adapt existing measurement methods to new technology projects. For example, the creation of large empirical databases of software projects, such as the ISBSG （International Software Benchmarking Standards Group）, of new functional size measurement standards such as COSMIC Full Function Points （FFP）,展开更多
文摘A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Materials Research Group, which was found in the early eighties of last century. The Center is focusing in the basic and applied research, and development of advanced metallic materials and their processing technology. It also functions as an organization
基金the support of Qilu Young Talent Program from Shandong University and the State Key Lab of Advanced Metals and Materials (No.2021-Z10)the financial support from the Scientific Research Program Funded by Shaanxi Provincial Education Department (No.19JK0039)
文摘Multi-principal-element alloys(MPEAs)are attracting increasing attentions because of their high strength and ductility,high fracture toughness,excellent corrosion resistance,outstanding thermal-softening resistance and high oxidation resistance.Moreover,gradient structures(GSs)have been shown to be effective in alleviating the strength-ductility trade-off although strength and ductility are mutually exclusive properties for metals,which provides an opportunity for developing highperformance MPEAs.Here,we summarized four processing methods for creating GSs in MPEAs,including rotationally accelerated shot peening(RASP),ultra-precision machining technology(UPMT),cyclic dynamic torsion(CDT),and ultrasonic surface rolling processing(USRP).Principles,advantages,disadvantages,and typical applications of these methods are discussed in this work.
文摘Recent years witness an increased awareness of the value of both metrics data collection and measurement method standardization to software organizations. This trend is coupled with the commitment of both researchers and practitioners to adapt existing measurement methods to new technology projects. For example, the creation of large empirical databases of software projects, such as the ISBSG （International Software Benchmarking Standards Group）, of new functional size measurement standards such as COSMIC Full Function Points （FFP）,
