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10.05: Experimental investigation on ferritic stainless steel post‐fire mechanical properties
Stainless steel has been increasingly applied in construction applications due to its mechanical, aesthetic and environmental advantages. Strength and stiffness reduce significantly when steel members are exposed to fire. However, previous researches have shown that part of strength and stiffness can be recovered after steel material is cooled down to room temperature. Understanding the post‐fire behaviour of stainless steel is necessary before its application to construction. Ferritic stainless steel, embedded with the advantages of high strength, good corrosion resistance and relatively low cost, has a great potential to be widely utilized as a construction material. Hence, an experimental investigation has been conducted to investigate the post‐fire mechanical properties and effects of cooling rates for ferritic stainless steel of type EN 1.4003. The experimental program consists of 34 coupon specimens, including 4 non‐fire‐exposed coupons and 30 heat‐treated coupons. The designed temperature of heat treatment is ranged from 24°C to 1000°C with the chosen cooling methods as cool‐in‐air, cool‐in‐air‐with‐fan and cool‐in‐water. A heat soak time of 20 minutes is selected for every round of heating. The influence of elevated temperatures and cooling methods on the post‐fire mechanical properties is presented in this paper. Mechanical properties of Young's modulus, yield strength, ultimate strength, strain at ultimate strength and Ramberg‐Osgood parameter obtained from test program are reported.
10.05: Experimental investigation on ferritic stainless steel post‐fire mechanical properties
Stainless steel has been increasingly applied in construction applications due to its mechanical, aesthetic and environmental advantages. Strength and stiffness reduce significantly when steel members are exposed to fire. However, previous researches have shown that part of strength and stiffness can be recovered after steel material is cooled down to room temperature. Understanding the post‐fire behaviour of stainless steel is necessary before its application to construction. Ferritic stainless steel, embedded with the advantages of high strength, good corrosion resistance and relatively low cost, has a great potential to be widely utilized as a construction material. Hence, an experimental investigation has been conducted to investigate the post‐fire mechanical properties and effects of cooling rates for ferritic stainless steel of type EN 1.4003. The experimental program consists of 34 coupon specimens, including 4 non‐fire‐exposed coupons and 30 heat‐treated coupons. The designed temperature of heat treatment is ranged from 24°C to 1000°C with the chosen cooling methods as cool‐in‐air, cool‐in‐air‐with‐fan and cool‐in‐water. A heat soak time of 20 minutes is selected for every round of heating. The influence of elevated temperatures and cooling methods on the post‐fire mechanical properties is presented in this paper. Mechanical properties of Young's modulus, yield strength, ultimate strength, strain at ultimate strength and Ramberg‐Osgood parameter obtained from test program are reported.
10.05: Experimental investigation on ferritic stainless steel post‐fire mechanical properties
Ho, Wing Kei (author) / Huang, Yuner (author)
ce/papers ; 1 ; 2544-2552
2017-09-01
9 pages
Article (Journal)
Electronic Resource
English
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