21-Mat-A6 Materials Selection and Design for Materials Processing
Worked solutions to 12 past sittings (2013–2018), 96 questions. Pick a sitting, or start from a topic below.
- Dec-10-Met-A6 2018
- Dec-12-Mtl-A6 2018
- December 2017
- May 2017
- December 2016
- May 2016
- December 2015
- May 2015
- December 2014
- May 2014
- December 2013
- May 2013
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Grain Growth (10 sittings): Dec-10-Met-A6 2018 Q5 · Dec-12-Mtl-A6 2018 Q3 · December 2017 Q5 · May 2017 Q1 · December 2016 Q5 · May 2016 Q3 · May 2015 Q5 · December 2014 Q1 · May 2014 Q5 · December 2013 Q2
- Recrystallization (10 sittings): Dec-10-Met-A6 2018 Q5 · Dec-12-Mtl-A6 2018 Q3 · December 2017 Q5 · May 2017 Q1 · December 2016 Q5 · May 2016 Q3 · May 2015 Q5 · December 2014 Q1 · May 2014 Q5 · December 2013 Q2
- Boundary Migration (9 sittings): Dec-10-Met-A6 2018 Q5 · Dec-12-Mtl-A6 2018 Q3 · December 2017 Q5 · May 2017 Q1 · December 2016 Q5 · May 2015 Q5 · December 2014 Q1 · May 2014 Q5 · December 2013 Q2
- Grain Growth in Aluminum Sheet (9 sittings): May 2017 Q3 · December 2016 Q3 · May 2016 Q2 · December 2015 Q2 · May 2015 Q3 · December 2014 Q3 · May 2014 Q3 · December 2013 Q8 · May 2013 Q2
- Property Changes (9 sittings): Dec-10-Met-A6 2018 Q5 · Dec-12-Mtl-A6 2018 Q3 · December 2017 Q5 · May 2017 Q1 · December 2016 Q5 · May 2015 Q5 · December 2014 Q1 · May 2014 Q5 · December 2013 Q2
- Recovery (9 sittings): Dec-10-Met-A6 2018 Q5 · Dec-12-Mtl-A6 2018 Q3 · December 2017 Q5 · May 2017 Q1 · December 2016 Q5 · May 2015 Q5 · December 2014 Q1 · May 2014 Q5 · December 2013 Q2
- Recrystallization Temperature (9 sittings): May 2017 Q3 · December 2016 Q3 · May 2016 Q2 · December 2015 Q2 · May 2015 Q3 · December 2014 Q3 · May 2014 Q3 · December 2013 Q8 · May 2013 Q2
- Metastable Precipitation Sequences (8 sittings): May 2017 Q2 · December 2016 Q1 · May 2016 Q4 · December 2015 Q4 · May 2015 Q1 · December 2014 Q2 · May 2014 Q1 · May 2013 Q4
- Ordered Domains (8 sittings): May 2017 Q2 · December 2016 Q1 · May 2016 Q4 · December 2015 Q4 · May 2015 Q1 · December 2014 Q2 · May 2014 Q1 · May 2013 Q4
- Spinodal Decomposition (8 sittings): May 2017 Q2 · December 2016 Q1 · May 2016 Q4 · December 2015 Q4 · May 2015 Q1 · December 2014 Q2 · May 2014 Q1 · May 2013 Q4
- Bainite (7 sittings): May 2017 Q4 · December 2016 Q4 · May 2016 Q8 · May 2015 Q4 · December 2014 Q4 · May 2014 Q4 · December 2013 Q1
- Martensite (7 sittings): May 2017 Q4 · December 2016 Q4 · May 2016 Q8 · May 2015 Q4 · December 2014 Q4 · May 2014 Q4 · December 2013 Q1
- Ausforming (5 sittings): Dec-12-Mtl-A6 2018 Q6 · December 2016 Q7 · May 2015 Q7 · May 2014 Q7 · December 2013 Q3
- Marstraining (5 sittings): Dec-12-Mtl-A6 2018 Q6 · December 2016 Q7 · May 2015 Q7 · May 2014 Q7 · December 2013 Q3
- Martempering (5 sittings): Dec-12-Mtl-A6 2018 Q6 · December 2016 Q7 · May 2015 Q7 · May 2014 Q7 · December 2013 Q3
Questions by sitting
Dec-10-Met-A6 2018
- Question 1: Heat Treatments Read from the Fe–Fe 3 C Phase Diagram — Hypoeutectoid Bound, Spheroidite, Normalizing and Dual-Phase (MA) Microstructure
- Question 2: Interphase Interface Coherency, Precipitate-Free Zones, and Why Fine Precipitates Restrict Grain Growth
- Question 3: Grain-Boundary Topology and Motion; Deriving the Zener Limiting Grain Size; Minimizing Grain Growth in Nb-Microalloyed HSLA Steel
- Question 4: Classical Nucleation Theory — Critical Radius, Undercooling, Heterogeneous versus Homogeneous Nucleation, and Interface Growth Morphology
- Question 5: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 6: Reading the TTT Diagram of a Eutectoid Steel — Four Isothermal/Interrupted-Quench Heat-Treatment Paths
- Question 7: Lowering the Recrystallization Temperature of Autobody Aluminum Panels; Two Factors Controlling Grain Growth during Sheet Annealing
- Question 8: Effects of Increasing Undercooling; Why Metals Do Not Solidify Exactly at $T_m$; Equilibrium versus Effective Distribution Coefficients
Dec-12-Mtl-A6 2018
- Question 1: Reading the TTT Diagram of a Eutectoid Steel — Four Isothermal/Interrupted-Quench Heat-Treatment Paths
- Question 2: Ceramic Powder Consolidation — Die Pressing versus Slip Casting, and Apparent versus True Porosity
- Question 3: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 4: Liquid Phase Sintering of Tungsten Carbide — Mass-Transport Pathways, No-Shrinkage Driving Force, Cobalt Requirements, and Capillary Densification Stress
- Question 5: Glass-Ceramics — Heterogeneous Nucleation and Phase Separation, Processing Cycle, and Comparison with TTT/CCT Curves for Steel
- Question 6: Thermomechanical Processing of Steel — TTT versus CCT, the Objective of TMP, and Ausforming, Martempering and Marstraining
- Question 7: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Grain-Growth Control During Sheet Annealing
- Question 8: Borosilicate Glass — Phase Separation, Tempering, Devitrification, and Photochromic versus Photosensitive Behaviour
December 2017
- Question 1: Reading the Fe–Fe 3 C Phase Diagram — Phases at 1200 °C, a Full Cooling Sequence, and a Critical Hypereutectoid Composition
- Question 2: Interphase Interface Coherency, Precipitate-Free Zones, and Why Fine Precipitates Restrict Grain Growth
- Question 3: Grain-Boundary Topology and Motion; Deriving the Zener Limiting Grain Size; Minimizing Grain Growth in Nb-Microalloyed HSLA Steel
- Question 4: Classical Nucleation Theory — Critical Radius, Undercooling, Heterogeneous versus Homogeneous Nucleation, and Interface Growth Morphology
- Question 5: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 6: Reading the TTT Diagram of a Eutectoid Steel — Four Isothermal/Interrupted-Quench Heat-Treatment Paths
- Question 7: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Grain-Growth Control During Sheet Annealing
- Question 8: Effects of Increasing Undercooling; Why Metals Do Not Solidify Exactly at $T_m$; Equilibrium versus Effective Distribution Coefficients
May 2017
- Question 1: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 2: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 3: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 4: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 5: Heat Treatments Read from the Fe–Fe 3 C Phase Diagram
- Question 6: Nucleation Mechanisms in Four Phase Transformations
- Question 7: Carbide/Nitride Solubility in Austenite; AlN in Hot-Rolled Steel
- Question 8: TTT Curve for a Eutectoid Steel; Controlled Rolling; Tempering Routes
December 2016
- Question 1: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 2: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Industrial Furnace Design
- Question 3: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 4: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 5: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 6: Nucleation Mechanisms in Four Phase Transformations
- Question 7: TTT versus CCT Curves; Thermomechanical Processing; Ausforming, Martempering and Marstraining
- Question 8: Heat Treatments of As-Cast Copper-Based Alloys
May 2016
- Question 1: Interphase Interface Coherency; Precipitate-Free Zones; Zener Pinning of Grain Growth
- Question 2: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 3: Property Evolution and Grain-Boundary Migration through Recovery, Recrystallization and Grain Growth
- Question 4: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 5: Nucleation Mechanisms in Four Phase Transformations
- Question 6: Heat Treatments of As-Cast Copper-Based Alloys
- Question 7: Thermal versus Constitutional Supercooling; Furnace Design for Cast-Iron Heat Treatment
- Question 8: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
December 2015
- Question 1: Heat Treatments Read from the Fe–Fe 3 C Phase Diagram
- Question 2: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 3: TTT Curve for a Eutectoid Steel; Controlled Rolling; Tempering Routes
- Question 4: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 5: Nucleation Mechanisms in Four Phase Transformations
- Question 6: Heat Treatments of As-Cast Copper-Based Alloys
- Question 7: Economical Furnace Design for Heat Treatment, 425–750 °C
- Question 8: Carbide/Nitride Solubility in Austenite; AlN in Hot-Rolled Steel
May 2015
- Question 1: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 2: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Industrial Furnace Design
- Question 3: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 4: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 5: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 6: Nucleation Mechanisms in Four Phase Transformations
- Question 7: TTT versus CCT Curves; Thermomechanical Processing; Ausforming, Martempering and Marstraining
- Question 8: Heat Treatments of As-Cast Copper-Based Alloys
December 2014
- Question 1: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 2: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 3: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 4: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 5: Heat Treatments Read from the Fe–Fe 3 C Phase Diagram
- Question 6: Nucleation Mechanisms in Four Phase Transformations
- Question 7: Carbide/Nitride Solubility in Austenite; AlN in Hot-Rolled Steel
- Question 8: TTT Curve for a Eutectoid Steel; Controlled Rolling; Tempering Routes
May 2014
- Question 1: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 2: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Industrial Furnace Design
- Question 3: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 4: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 5: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 6: Nucleation Mechanisms in Four Phase Transformations
- Question 7: TTT versus CCT Curves; Thermomechanical Processing; Ausforming, Martempering and Marstraining
- Question 8: Heat Treatments of As-Cast Copper-Based Alloys
December 2013
- Question 1: Heat Treatments of a Hypoeutectoid Steel; Martensite versus Bainite
- Question 2: Recovery, Recrystallization and Grain Growth — Property Changes and Boundary Migration
- Question 3: TTT versus CCT Curves; Thermomechanical Processing; Ausforming, Martempering and Marstraining
- Question 4: Reading the Fe–Fe 3 C Phase Diagram — Phases at 1200 °C, a Full Cooling Sequence, and a Critical Hypereutectoid Composition
- Question 5: Nucleation Mechanisms in Four Phase Transformations
- Question 6: Heat Treatments of As-Cast Copper-Based Alloys
- Question 7: Three-Stage Heat Treatment of Hardenable Aluminum Alloys; Industrial Furnace Design
- Question 8: Recrystallization Temperature and Grain Growth in Aluminum Sheet
May 2013
- Question 1: Heat Treatments Read from the Fe–Fe 3 C Phase Diagram
- Question 2: Recrystallization Temperature and Grain Growth in Aluminum Sheet
- Question 3: TTT Curve for a Eutectoid Steel; Controlled Rolling; Tempering Routes
- Question 4: Metastable Precipitation Sequences, Spinodal Decomposition and Ordered Domains
- Question 5: Nucleation Mechanisms in Four Phase Transformations
- Question 6: Heat Treatments of As-Cast Copper-Based Alloys
- Question 7: Economical Furnace Design for Heat Treatment, 425–750 °C
- Question 8: Carbide/Nitride Solubility in Austenite; AlN in Hot-Rolled Steel