1 Introduction Sichuan Basin is basically a salt brine reservoir,large closed and semi-closed artesian sedimentary basin with an area of 200,000 Km2 in southeast China.During the forming and evolution of the basin,it ...1 Introduction Sichuan Basin is basically a salt brine reservoir,large closed and semi-closed artesian sedimentary basin with an area of 200,000 Km2 in southeast China.During the forming and evolution of the basin,it has been affected by展开更多
The microstructural evolution during plastic deformation is described as grain subdivision on a finer and finer scale with increasing strain. Key structural features are dislocation boundaries and high angle boundarie...The microstructural evolution during plastic deformation is described as grain subdivision on a finer and finer scale with increasing strain. Key structural features are dislocation boundaries and high angle boundaries. These boundaries have characteristic parameters which are used in a comparison of deformation microstructures produced under different conditions.展开更多
Morphology evolution of prior β grains of laser solid forming （LSF） Ti-xAl-yV （x 11,y 20） alloys from blended elemental powders is investigated. The formation mechanism of grain morphology is revealed by incorpor...Morphology evolution of prior β grains of laser solid forming （LSF） Ti-xAl-yV （x 11,y 20） alloys from blended elemental powders is investigated. The formation mechanism of grain morphology is revealed by incorporating columnar to equiaxed transition （CET） mechanism during solidification. The morphology of prior β grains of LSF Ti-6Al-yV changes from columnar to equiaxed grains with increasing element V content from 4 to 20 wt.-%. This agrees well with CET theoretical prediction. Likewise, the grain morphology of LSF Ti-xAl-2V from blended elemental powders changes from large columnar to small equiaxed with increasing Al content from 2 to 11 wt.-%. The macro-morphologies of LSF Ti-8Al-2V and Ti-11Al-2V from blended elemental powders do not agree with CET predictions. This is caused by the increased disturbance effects of mixing enthalpy with increasing Al content, generated in the alloying process of Ti, Al, and V in the molten pool.展开更多
Literature is the art of language, so in the light of the profound influence of linguistic transformation on the development of modem Chinese literary forms it is appropriate to present the history of the development ...Literature is the art of language, so in the light of the profound influence of linguistic transformation on the development of modem Chinese literary forms it is appropriate to present the history of the development of modern Chinese literature as the art of language. Modern Chinese literature starts with the linguistic transformation of the May Fourth Movement＇s rejection of classical Chinese and promotion of the vernacular. This language revolution and the transformation of literary language during each subsequent historical period have exerted a profound influence on the overall development of modern Chinese literature, including literary forms, and hence have become an inner source of the development and evolution of modern Chinese literary forms and of the shaping of their main characteristics. An in-depth discussion of the interaction between linguistic transformation and the development of modem Chinese literary forms as well as the roles governing this process will not only disclose the universal linguistic context of literary creation created by the transformation of language but will also enable us to find the historical sources of the phenomena of literary genres and forms, writers＇ choice of literary styles, the formal characteristics of literary works, etc., and will offer a correct explanation and evaluation of the May Fourth vernacular movement and the subsequent series of new literary forms andstyles. This is instrumental to achieving a better summation of the experience and lessons of the development of modem Chinese literary forms and to finding historical clues to the development of our present-day literary forms.展开更多
基金supported by China Geological Survey Projects(1212010011803, 121201103000150011)
文摘1 Introduction Sichuan Basin is basically a salt brine reservoir,large closed and semi-closed artesian sedimentary basin with an area of 200,000 Km2 in southeast China.During the forming and evolution of the basin,it has been affected by
文摘The microstructural evolution during plastic deformation is described as grain subdivision on a finer and finer scale with increasing strain. Key structural features are dislocation boundaries and high angle boundaries. These boundaries have characteristic parameters which are used in a comparison of deformation microstructures produced under different conditions.
基金supported by the State Key Laboratory of Solidification Processing in NWPU (Nos.SKLSP201102 and 06-BZ-2010)Lthe China Postdoc-toral Science Foundation (No.20100470040)the National Natural Science Foundation of China (No.50871089)
文摘Morphology evolution of prior β grains of laser solid forming （LSF） Ti-xAl-yV （x 11,y 20） alloys from blended elemental powders is investigated. The formation mechanism of grain morphology is revealed by incorporating columnar to equiaxed transition （CET） mechanism during solidification. The morphology of prior β grains of LSF Ti-6Al-yV changes from columnar to equiaxed grains with increasing element V content from 4 to 20 wt.-%. This agrees well with CET theoretical prediction. Likewise, the grain morphology of LSF Ti-xAl-2V from blended elemental powders changes from large columnar to small equiaxed with increasing Al content from 2 to 11 wt.-%. The macro-morphologies of LSF Ti-8Al-2V and Ti-11Al-2V from blended elemental powders do not agree with CET predictions. This is caused by the increased disturbance effects of mixing enthalpy with increasing Al content, generated in the alloying process of Ti, Al, and V in the molten pool.
文摘Literature is the art of language, so in the light of the profound influence of linguistic transformation on the development of modem Chinese literary forms it is appropriate to present the history of the development of modern Chinese literature as the art of language. Modern Chinese literature starts with the linguistic transformation of the May Fourth Movement＇s rejection of classical Chinese and promotion of the vernacular. This language revolution and the transformation of literary language during each subsequent historical period have exerted a profound influence on the overall development of modern Chinese literature, including literary forms, and hence have become an inner source of the development and evolution of modern Chinese literary forms and of the shaping of their main characteristics. An in-depth discussion of the interaction between linguistic transformation and the development of modem Chinese literary forms as well as the roles governing this process will not only disclose the universal linguistic context of literary creation created by the transformation of language but will also enable us to find the historical sources of the phenomena of literary genres and forms, writers＇ choice of literary styles, the formal characteristics of literary works, etc., and will offer a correct explanation and evaluation of the May Fourth vernacular movement and the subsequent series of new literary forms andstyles. This is instrumental to achieving a better summation of the experience and lessons of the development of modem Chinese literary forms and to finding historical clues to the development of our present-day literary forms.
