Compressive behaviour of titanium iron alloys: data

This dataset is part of a collaboration cluster project, between the Centre of Excellence for Design in Light Metals and the CSIRO which was funded by a CSIRO Flagship Cluster grant from 2006-2009. The project examines the mechanical properties of titanium iron alloys. Compression tests are carried out in order to observe the behaviour of the alloys at different temperatures and different speeds. The raw data consists of stress versus strain measurements relating to 3 alloys, 3 compositions, 3 temperatures and 3 strain rates. Colleen Bettles from Monash University worked with Sreekumar Vadakke Madam from Deakin University to obtain the raw data in a csv file using Instron for compression. Stress and strain are measured throughout the test with a different series of tests for each subtle change in the composition of the alloy. The basic stress strain curve is calculated from the raw data and further information is generated from subsets of the data. For example, for a single temperature, what is the effect of strain rate? And for a single strain rate, what is the effect of temperature? Using pro Fit (OS Mac), it is then possible to combine 2 results together to produce a processing map. The map calculates an efficiency, which is a measure of where it is easiest to process the alloy. Thus a processing map for the base alloy calculates an efficiency of using a high temperature and a low strain rate. By varying the composition of the alloy, the goal is to find areas where faster strain rates and lower temperatures of processing can used which require less energy. The processing maps act as a visual aid. There is also a document detailing the measurements made in each test.

本数据集隶属于轻金属设计卓越中心与澳大利亚联邦科学与工业研究组织（CSIRO）的合作集群项目，该项目于2006年至2009年间获CSIRO旗舰集群专项资助。本项目聚焦钛铁合金的力学性能研究，为观测合金在不同温度与应变速率下的行为，团队开展了一系列压缩试验。原始数据集包含3种合金、3种成分配比、3种试验温度及3种应变速率对应的应力-应变测量结果。莫纳什大学的科琳·贝特勒（Colleen Bettles）与迪肯大学的斯里克马尔·瓦达克·马丹（Sreekumar Vadakke Madam）合作，使用英斯特朗（Instron）材料试验机完成压缩试验，并将原始测试数据存储为逗号分隔值（Comma-Separated Values，CSV）文件。试验全程同步采集应力与应变数据，针对合金成分的每一处细微调整，均设置了独立的测试序列。基于原始数据可计算得到基础应力-应变曲线，并可通过数据子集生成更多衍生分析信息。例如可开展如下分析：固定试验温度，探究应变速率对合金行为的影响；或固定应变速率，探究温度的作用效果。借助pro Fit（苹果操作系统版）软件，可将两组分析结果整合生成加工图（processing map），该加工图可计算得到加工效率——这是衡量合金加工难易程度的核心指标。以基础合金为例，其加工图显示，采用高温低应变速率的工艺时，合金加工效率最优。本研究通过调整合金的成分配比，旨在寻找到可采用更高应变速率与更低加工温度的工艺区间，从而降低加工能耗。加工图可作为可视化辅助工具，另有一份配套文档详细记录了每一项试验的测量细节。