一、近况介绍变形铝合金用于受压容器时,其基体材料和焊接接头的屈服强度、抗拉强度、伸长率、弯曲角、硬度和缺口冲击韧性等的最低值均应根据BV30—9/74[1]加以验证。屈服强度、抗拉强度和伸长率之数值系在拉伸试验中确定,并表征材料在单向载荷下的性能。缺口冲击韧性的测定用于评定材料的韧性和脆性断裂的倾向。这个与文献相符的 First, the current situation Introduction Deformation aluminum alloy used in pressure vessels, the base material and welded joints yield strength, tensile strength, elongation, bending angle, hardness and notch impact toughness, etc. should be based on BV30-9 / 74 [1] to verify. The values ​​of yield strength, tensile strength and elongation are determined in the tensile test and characterize the material under uniaxial load. The notched impact toughness is used to assess the tenacity of the material and the tendency of the brittle fracture. This is consistent with the literature