能量色散型 X 荧光光谱分析(EDXRF)是七十年代以后发展起来的一种新型的光谱分析方法,其分析特点是快速、无损、检测范围广。我所重新冶炼的 K13高温合金钢是能源、交通工业所需要的重要材料,其中镍铬钨钛铝的浓度均在1%以上(镍34%～38%...能量色散型 X 荧光光谱分析(EDXRF)是七十年代以后发展起来的一种新型的光谱分析方法,其分析特点是快速、无损、检测范围广。我所重新冶炼的 K13高温合金钢是能源、交通工业所需要的重要材料,其中镍铬钨钛铝的浓度均在1%以上(镍34%～38%,铬14%～16%,钨4%～7%,钛3%～4%,铝1.5%～2.0%)。本文在用 EDXRF展开更多
Effects of Ti, Hf, Nb and W alloying elements addition on the microstructure and the mechanical behaviors of NiAl-Cr（Mo） intermetallic alloy were investigated by means of XRD, SEM, EDX and compression tests. The res...Effects of Ti, Hf, Nb and W alloying elements addition on the microstructure and the mechanical behaviors of NiAl-Cr（Mo） intermetallic alloy were investigated by means of XRD, SEM, EDX and compression tests. The results show that Ni-31Al-30Cr-4Mo-2（Ti, Hf, Nb, W） alloy consists of four phases： NiAl, ？？Cr solid solution, Cr2Nb and Ni2Al（Ti, Hf）. The mechanical properties are improved significantly compared with the base alloy. The compression yield strength at 1 373 K is 467 MPa and the room temperature compression ductility is 17.87% under the strain rate of 5.56？？0-3 s-1, due to the existence of Cr2Nb and Ni2Al（Ti, Hf） phases for strengthening and Ti solid solution in NiAl matrix and coarse Cr（Mo, W） solid solution phase at cellular boundaries for ductility. The elevated temperature compression deformation behavior of the alloy can be properly described by power-law equation： ε=0.898 σ8.47exp[-615/（RT）].展开更多
文摘能量色散型 X 荧光光谱分析(EDXRF)是七十年代以后发展起来的一种新型的光谱分析方法,其分析特点是快速、无损、检测范围广。我所重新冶炼的 K13高温合金钢是能源、交通工业所需要的重要材料,其中镍铬钨钛铝的浓度均在1%以上(镍34%～38%,铬14%～16%,钨4%～7%,钛3%～4%,铝1.5%～2.0%)。本文在用 EDXRF
基金Project supported by Aerospace Science and Technology Innovation Fund of China
文摘Effects of Ti, Hf, Nb and W alloying elements addition on the microstructure and the mechanical behaviors of NiAl-Cr（Mo） intermetallic alloy were investigated by means of XRD, SEM, EDX and compression tests. The results show that Ni-31Al-30Cr-4Mo-2（Ti, Hf, Nb, W） alloy consists of four phases： NiAl, ？？Cr solid solution, Cr2Nb and Ni2Al（Ti, Hf）. The mechanical properties are improved significantly compared with the base alloy. The compression yield strength at 1 373 K is 467 MPa and the room temperature compression ductility is 17.87% under the strain rate of 5.56？？0-3 s-1, due to the existence of Cr2Nb and Ni2Al（Ti, Hf） phases for strengthening and Ti solid solution in NiAl matrix and coarse Cr（Mo, W） solid solution phase at cellular boundaries for ductility. The elevated temperature compression deformation behavior of the alloy can be properly described by power-law equation： ε=0.898 σ8.47exp[-615/（RT）].
