کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9804151 | 1516479 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transformation sequence and second phases in ternary Ti-Ni-W shape memory alloys with less than 2 at.% W
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Transformation sequence and second phases in Ti50âXNi50WX, Ti50Ni50âXWX and Ti51Ni49âXWX alloys with X = 1-2Â at.% are investigated. Two different second-phase particles located at grain boundaries are observed. The lattice parameters of Ti50Ni49W1 martensite are calculated from the selected area diffraction patterns (SADP) and all of them are larger than those of Ti50Ni50 alloy. Experimental results indicate that the W atoms replace Ni atoms, instead of Ti ones in these alloys. In addition, Ti50âXNi50WX and Ti51Ni49âXWX alloys have a two-stage B2 â R â B19â² transformation, but the Ti50Ni50âXWX alloy has a one-stage B2 â B19â² transformation because the former Ms temperatures are depressed significantly. The shape recovery of these alloys can be improved by the W solid-solution hardening. With higher matrix hardness in these alloys, there is better shape recovery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 387, Issues 1â2, 25 January 2005, Pages 121-127
Journal: Journal of Alloys and Compounds - Volume 387, Issues 1â2, 25 January 2005, Pages 121-127
نویسندگان
S.F. Hsieh, S.K. Wu, H.C. Lin, C.H. Yang,