Jianzhu Gangjiegou Jinzhan, 2022 对304D奥氏体和TSZ410铁素体不锈钢进行了高温过火冷却后的力学性能试验研究，得到了高温过火冷却后不锈钢材料的弹性模量、名义屈服强度、抗拉强度、断后伸长率等主要力学性能指标，并将试验结果与已有同类试验结果进行对比。结果表明，两种不锈钢在不同过火温度和冷却方式（自然冷却、浸水冷却）下有不同的外观特征，过火温度高于400 ℃时，TSZ410铁素体不锈钢试件表面颜色均比304D奥氏体不锈钢要深；高温过火冷却对304D奥氏体不锈钢的屈服强度有一定的影响，对其弹性模量、极限强度和断后伸长率的影响不大 ...
陶宇超 +4 more
doaj
A micromechanically motivated uncoupled model for ductile fracture prediction [PDF]
, 2017 This paper is a contribution to the ductile fracture prediction by the proposal of a new uncoupled ductile fracture criterion. In the new criterion, two typical void deformation models were carefully considered, with the plastic strain increment regarded
Araujo Stemler Pedro Malaquias +2 more
core +1 more source
Microstructure and mechanical properties of Nb-Ti micro-alloy hot stamping steels [PDF]
, 2017 The microstructure of Nb-Ti micro-alloy hot stamping steels was observed and investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The toughness and tear properties were investigated by Kahn tear test.
DAI Si-yu +4 more
core +1 more source
Evaluation of residual stress and its influence on fracture performance of Q690 thick plate butt welded joint [PDF]
ObjectiveThis study aims to investigate the complex welding residual stress of high-strength steel thick plate with multi-pass welding, and examines the influence of such stress on the fracture behavior of welded joints.
Hongquan ZHAO +6 more
core +1 more source
Characteristics of the as-cast high-carbon microalloyed continuous casting bloom steel for expansion-break connecting rods [PDF]
, 2022 Expansion-break connecting rods are high-end products for automotive precision transmission. They need to have high strength, high toughness, and brittle cleavage fracture characteristics during cracking processing.
Hai-yan TANG +6 more
core +1 more source
Mechanism analysis of cutting distortion of thin plate with high tensile strength steel for its prediction and control [PDF]
ObjectiveIn order to effectively control flame cutting precision of thin plate with high tensile strength steel, Generation mechanism of out-of-plane buckling distortion and in-plane bending distortion were investigated, and processing with dynamic ...
Hongquan ZHAO +6 more
core +1 more source
Influence of vanadium on the microstructure refinement of high strength automobile beam steel [PDF]
, 2016 The effects of vanadium on the microstructure refinement of automobile beam steel with a yield strength of 700 MPa were investigated by Gleeble-3500 Thermo Simulator, scanning electron microscopy, transmission electron microscopy and electron back ...
HE Yu-tian +5 more
core +1 more source
Mechanical behavior and stability control of regenerated roof in long wall stratified mining of thick steeply dipping coal seam [PDF]
, 2023 This study focused on the stability control of roof in long wall stratified mining of large dip angle thick coal seam. Taking Panbei Coal Mine in Huainan as an example, the effect mechanism of water content, compression ratio and grain size grading on ...
Ke YANG +3 more
core +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 为研究超出规范范围材料强度的高强钢管高强混凝土短柱承载力在规范范围外拓展应用的相关问题，搜集61组试验及有限元数据，利用神经网络智能技术研究了在不同的截面尺寸、高强材料、含钢率、偏心率和长细比等影响因素下的高强钢管高强混凝土短柱的极限承载力及荷载-位移曲线，将承载力预测结果与规范EC4、规范ACI及规范GJB 4142—2000的计算结果进行了对比分析，并预测了试件的荷载-位移曲线，对各阶段各模型的切线刚度进行了分析研究。研究结果表明：所述规范可以在一定程度上继续延伸使用 ...
刘坚 +11 more
doaj
Research on Bearing Capacity of Angle Steel Transmission Tower Subject to Parallel Reinforcement by Fitting Channel Steel [PDF]
, 2023 [Introduction] The existing angle steel transmission tower has been running for many years, and the structural damage leads to the reduction of service performance.
Donghong ZHANG +4 more
core +1 more source