特殊鋼熔接の基礎的研究(第2報) : 強靱鋼板の靜的彎曲破壊エネルギーに及ぼす電弧熔着ビードの影響について

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In this research, the authors designed and manufactured a special apparrtus for statical bendmg- break tests ot plates, and statically broke unaffected plates made of alloy steels and plates deposited with a single bead using the apparatus And they measured the energies necessary lor the statical bend ing-break, and compared the numerical value of the former with that,of the latter In this manner, the following results were obtained. (1) The energy necessary for the statical be'nding-break of a rectangular alloy steel plate deposited' with a single bead is very smoller than that of the unaffected plate having the same composition and heat-treated'in the same mannen without weld-deposition That is, the effect of ahead deposited with arc on the necessary energy is very large (2) The energy necessary for the statical bendmg-break of alloy steel is variable with the kitid ol alloy steel considerably Namely, if we assume that the toughness of a steel plate can be expressed in such a numerical value, the toughness varies with the kind of alloy steel in a marked degree (3) The authors called the numerical value, which is obtained with dividing necessary energy for the unaffected plate by that for the plate deposited with a single bead% in the term of the sensibility value for weld-deposition Then they proposed to express the sensibility for weld deposition m such a numerical value That is, this property varies remarkably with the kind of alloy stael. And the authors considered that the phenomenon of (1) is closely bound up with the formation of the hardened zone ad;acent to the bead deposited.
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特殊鋼熔接の基礎的研究(第2報) : 強靱鋼板の靜的彎曲破壊エネルギーに及ぼす電弧熔着ビードの影響について

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