TENG Feng'en WANG Yuming XU Yue Jilin University
,
Changchun
,
China
金属学报(英文版)
X-ray diffraction profiles of various deformed steel 1Cr18Ni9 through stepped scanning were obtained.By profile analysis,some structure parameters such as effective domain size D_(eff), dislocation density in domain,distribution parameterand bulk stored energy densiy (E/V),etc.,were obtained.The results were compared with those of TEM observation.The true domain sizes D_e are comparable,but the minimum and characteristics of width of stack- ing fault are different.This may be resulted from the large fluctuation in width of stacking fault.
关键词:
austenitic stainless steel
,
null
,
null
LI Delin YANG Gencang ZHOU Yaohe Northwestern Polytechnical University
,
Xi'an
,
China Faculty No.403
,
Northwestern Polytechnical University
,
Xi'an 710072
,
China
金属学报(英文版)
One,two and three recalescence events in the solidification of highly undercooled Ni_68B_21Si_11 alloy melt and the conditions of undercooling together with the effect on solidification morphologies were revealed.The solidification morphologies of the undercooled alloy may be examined in the light of two aspects,i.e,growth of either Ni_3B,Ni_6Si_2B and Ni_2B ternary eutectic or dendrite cluster with Ni_3B as leading phase.When the degree of undercooling below 200 or over 310 K,the alloy solidifies to accompany one recalescence only, and the crystals grow according to the first mode of solidification.While undercooling at other temperatures,two or three events of recalescence may occur and the dendrite cluster may so- lidify.
关键词:
recalescence event
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null
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null
