Reaction-milled NiAl-TiB2 composite was fabricated by mechanical alloying elemental powders and hot pressing. TiB2 particles are distributed mostly in grain boundaries of the matrix. The compressive strain to failure ...Reaction-milled NiAl-TiB2 composite was fabricated by mechanical alloying elemental powders and hot pressing. TiB2 particles are distributed mostly in grain boundaries of the matrix. The compressive strain to failure of the composite at RT is about twice that of cast NiAl. The compressive yield stress at high temperatures is about 4.5 times higher than that of extruded NiAl, and is also much stronger than XD NiAl-TiB2 composites. Deformation behavior between 1000~1100℃ with different strain rates has been investigated展开更多
Preliminary investigation generates from China's investigation practice of duty crime spontaneously.The deviation between expression and practice of preliminary investigation has both advantages and disadvantages,...Preliminary investigation generates from China's investigation practice of duty crime spontaneously.The deviation between expression and practice of preliminary investigation has both advantages and disadvantages,doing more harm than good.In order to solve the problem,the benefit drive mechanism of actors of preliminary investigation should be changed from two aspects:to make mechanism of target assessment scientific and to evade risks from objects being investigated;legal consequences for violating preliminary investigation procedure,implementation mechanism and supervision and restriction mechanism of right to preliminary investigation should be reasonably established.展开更多
文摘Reaction-milled NiAl-TiB2 composite was fabricated by mechanical alloying elemental powders and hot pressing. TiB2 particles are distributed mostly in grain boundaries of the matrix. The compressive strain to failure of the composite at RT is about twice that of cast NiAl. The compressive yield stress at high temperatures is about 4.5 times higher than that of extruded NiAl, and is also much stronger than XD NiAl-TiB2 composites. Deformation behavior between 1000~1100℃ with different strain rates has been investigated
基金the staged achievement of the National Social Science Fund Project“Supervision and Restriction Mechanism of the Procuratorial Investigation Power”(12CFX041)
文摘Preliminary investigation generates from China's investigation practice of duty crime spontaneously.The deviation between expression and practice of preliminary investigation has both advantages and disadvantages,doing more harm than good.In order to solve the problem,the benefit drive mechanism of actors of preliminary investigation should be changed from two aspects:to make mechanism of target assessment scientific and to evade risks from objects being investigated;legal consequences for violating preliminary investigation procedure,implementation mechanism and supervision and restriction mechanism of right to preliminary investigation should be reasonably established.
