Experimental Study of the Transformation-Induced Plasticity in a Cr-Ni-Mo-Al-Ti Steel
نویسندگان
چکیده
This paper shows cxpcrinicn~~~l results concerning thc lnartcnsitic transcormation and the transfor1nation-in(i~1cc(I plasticity undcr multinsial loading. The matcrial investigated is a Cr-Ni-Mo-Al-Ti steel, which is suhrnitlcd to :I y--)cr.' nlartcnsitic phasc: transformation undcr an applicd strcss. The specimens are thin tubes loadcd in ~cnsion-~orsion. The ~csts wcrc specially dcsigncd to providc information on classical questions rclatcd with transforrna~ion plasricily and 111c ~ntcraction bctwccn applicd strcsscs and phasc transSormations in the casc of tcnsion-shear loadings: cl'fcct of the applicti strcsscs on M, tcmpcrature, definition of the transformation-ind~~ccci p l ; ) s ~ i c ~ ~ y (Ilow intensity, dirwtion in sucss spacc, evolution vs phase change), eventual prcsencc o f inicrr~iil strcsscs. Somc ol' the answers gi\fcr~ by thc prcscnt study confirm the usual assumptions, but the analysis of the tcsts also rcvculs ncw cfkcts not predicted by thc classical theories proposed to quantify the transformation induccd plastici~y phcnomcnon.
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