Effect of Nb on the As-cast Structure and Compactness Degree of Ferritic Stainless Steel Dual Stabilized by Ti and Nb
نویسندگان
چکیده
منابع مشابه
the effect of explicit teaching of metacognitive vocabulary learning strategies on recall and retention of idioms
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15 صفحه اولthe effect of teaching reading as whole text task and paragraph task on efl learners speaking
abstract the present study was conducted to investigate the effectiveness of a rather newly developed method in language teaching that is the use of paragraph reading task and whole reading task and their effects on improving efl learner’s speaking ability. to fulfill the purpose of the study, first 90 participants studying their course at sa eedi high school in tehran were chosen by means of ...
15 صفحه اولEFFECT OF Nb AND Ti ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 30% Ni / 18% Cr CAST STEEL AFTER ANNEALING
The study discusses the microstructure and mechanical properties of eight tested 0.3 % C -30 % Ni 18 % Cr cast steels stabilized with niobium and titanium after annealing in the cycle of 900 °C / 300 h. The niobium content in the cast steels varied from 0.0 to 2.0 % and that of titanium from 0.0 to 1.2 % by weight. Microstructure was examined using both light microscope and a scanning electron ...
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بر اساس فرضیه شناخت رابینسون (2001 و 2003 و 2005) و مدل ظرفیت توجه محدود اسکهان (1998)، این تحقیق تاثیر پیچیدگی تکلیف را بر پیچیدگی واژگان و صحت گرامری نوشتار مباحثه ای 60 نفر از دانشجویان زبان انگلیسی بررسی کرد. میزان پیچیدگی تکلیف از طریق فاکتورهای پراکندگی-منابع تعیین شد. همه ی شرکت کنندگان به صورت نیمه تصادفی به یکی از سه گروه: (1) گروه موضوع، (2) گروه موضوع + اندیشه و (3) گروه موضوع + اندی...
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Aiming at developing a dental titanium alloy with better mechanical properties and machinability than unalloyed titanium, a series of Ti-Nb alloys with Nb concentrations up to 30% was made. They were cast into magnesia-based molds using a dental casting machine and the mechanical properties and grindability of the castings were examined. The hardness of the alloys with Nb concentrations of 5% a...
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ژورنال
عنوان ژورنال: ISIJ International
سال: 2018
ISSN: 0915-1559,1347-5460
DOI: 10.2355/isijinternational.isijint-2017-595