NING Yuantao
,
S. H. Whang Institute of Precious Metals
,
Kunming
,
Yunnan
,
China. Barnett Institute of Northeastern University
,
Boston
,
MA 02115
,
U. S. A.
材料科学技术（英文）
Various Mo-base alloys with high melting temperature were processed into ribbons and foils by the arc melt-spinning and the arc melt hammer-anvil technique. The preparation of ribbon and foil was introduced. The mechanical proper- ties, the surface topology and the microstructure of rapidly solidified Mo-base alloys containing B were examined. A strong grain refinement and a strong age-hardening response were observed on the as-quenched and the age specimens, the precipitates which cause age hardening were identified to be Mo_2B in Mo-B alloys, Mo_2B and ZrB_2 in Mo-Zr-B alloys, and Mo_2B and ThB_4 in Mo-Th-B alloys. The results indicate that the high strength Mo-base alloys containing boride precipitates can be developed by rapid solidifica- tion technique.
关键词:
Mo-alloys
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NING Yuantao
,
WENFei(Kunming Institute of Precious Metals Kunming 650221.China)Manuscript received 4 May 1995
金属学报(英文版)
The recovery processes of cold deformed Ag and Ag-Ce alloy containing trace cerium were studied by XRD analysis.Based on Scherrer formula and an analytical program,the lattice distortion and subgrain size for both Ag and Ag-Ce alloy were determined in the recovery process.The cold deformed high purity Ag showed tow recrystallization temperature,obvious lattice relaxation and age-softening.The trace Ce solute is an effective inhibitor for recovery softening of high purity Ag since it raises the recrystallization temperature and restrains the lattice relaxation.
关键词:
:Ag
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